diff --git a/src/Avalonia.Controls/Control.cs b/src/Avalonia.Controls/Control.cs
index 27b046cf47..758f7bbf55 100644
--- a/src/Avalonia.Controls/Control.cs
+++ b/src/Avalonia.Controls/Control.cs
@@ -469,7 +469,7 @@ namespace Avalonia.Controls
             {
                 if (!IsInitialized)
                 {
-                    foreach (var i in this.GetSelfAndVisualDescendents())
+                    foreach (var i in this.GetSelfAndVisualDescendants())
                     {
                         var c = i as IControl;
 
diff --git a/src/Avalonia.Controls/Presenters/ScrollContentPresenter.cs b/src/Avalonia.Controls/Presenters/ScrollContentPresenter.cs
index c217290226..e41c4e1e28 100644
--- a/src/Avalonia.Controls/Presenters/ScrollContentPresenter.cs
+++ b/src/Avalonia.Controls/Presenters/ScrollContentPresenter.cs
@@ -111,7 +111,7 @@ namespace Avalonia.Controls.Presenters
         /// <param name="target">The target visual.</param>
         /// <param name="targetRect">The portion of the target visual to bring into view.</param>
         /// <returns>True if the scroll offset was changed; otherwise false.</returns>
-        public bool BringDescendentIntoView(IVisual target, Rect targetRect)
+        public bool BringDescendantIntoView(IVisual target, Rect targetRect)
         {
             if (Child == null)
             {
@@ -262,7 +262,7 @@ namespace Avalonia.Controls.Presenters
 
         private void BringIntoViewRequested(object sender, RequestBringIntoViewEventArgs e)
         {
-            e.Handled = BringDescendentIntoView(e.TargetObject, e.TargetRect);
+            e.Handled = BringDescendantIntoView(e.TargetObject, e.TargetRect);
         }
 
         private void ChildChanged(AvaloniaPropertyChangedEventArgs e)
diff --git a/src/Avalonia.Controls/Templates/TemplateExtensions.cs b/src/Avalonia.Controls/Templates/TemplateExtensions.cs
index 535be23b23..09da737836 100644
--- a/src/Avalonia.Controls/Templates/TemplateExtensions.cs
+++ b/src/Avalonia.Controls/Templates/TemplateExtensions.cs
@@ -31,9 +31,9 @@ namespace Avalonia.Controls.Templates
 
                 if (child.TemplatedParent != null)
                 {
-                    foreach (var descendent in GetTemplateChildren(child, templatedParent))
+                    foreach (var descendant in GetTemplateChildren(child, templatedParent))
                     {
-                        yield return descendent;
+                        yield return descendant;
                     }
                 }
             }
diff --git a/src/Avalonia.Controls/TopLevel.cs b/src/Avalonia.Controls/TopLevel.cs
index 567ca80d6e..1f1a29afa3 100644
--- a/src/Avalonia.Controls/TopLevel.cs
+++ b/src/Avalonia.Controls/TopLevel.cs
@@ -253,7 +253,7 @@ namespace Avalonia.Controls
         /// <param name="scaling">The window scaling.</param>
         protected virtual void HandleScalingChanged(double scaling)
         {
-            foreach (ILayoutable control in this.GetSelfAndVisualDescendents())
+            foreach (ILayoutable control in this.GetSelfAndVisualDescendants())
             {
                 control.InvalidateMeasure();
             }
diff --git a/src/Avalonia.Input/Navigation/DirectionalNavigation.cs b/src/Avalonia.Input/Navigation/DirectionalNavigation.cs
index b2f7a35799..a88ed1e8aa 100644
--- a/src/Avalonia.Input/Navigation/DirectionalNavigation.cs
+++ b/src/Avalonia.Input/Navigation/DirectionalNavigation.cs
@@ -44,7 +44,7 @@ namespace Avalonia.Input.Navigation
                                GetFirstInNextContainer(element, direction);
                     case KeyboardNavigationMode.Cycle:
                         return GetNextInContainer(element, container, direction) ??
-                               GetFocusableDescendent(container, direction);
+                               GetFocusableDescendant(container, direction);
                     case KeyboardNavigationMode.Contained:
                         return GetNextInContainer(element, container, direction);
                     default:
@@ -53,7 +53,7 @@ namespace Avalonia.Input.Navigation
             }
             else
             {
-                return GetFocusableDescendents(element).FirstOrDefault();
+                return GetFocusableDescendants(element).FirstOrDefault();
             }
         }
 
@@ -71,24 +71,24 @@ namespace Avalonia.Input.Navigation
         }
 
         /// <summary>
-        /// Gets the first or last focusable descendent of the specified element.
+        /// Gets the first or last focusable descendant of the specified element.
         /// </summary>
         /// <param name="container">The element.</param>
         /// <param name="direction">The direction to search.</param>
         /// <returns>The element or null if not found.##</returns>
-        private static IInputElement GetFocusableDescendent(IInputElement container, NavigationDirection direction)
+        private static IInputElement GetFocusableDescendant(IInputElement container, NavigationDirection direction)
         {
             return IsForward(direction) ?
-                GetFocusableDescendents(container).FirstOrDefault() :
-                GetFocusableDescendents(container).LastOrDefault();
+                GetFocusableDescendants(container).FirstOrDefault() :
+                GetFocusableDescendants(container).LastOrDefault();
         }
 
         /// <summary>
-        /// Gets the focusable descendents of the specified element.
+        /// Gets the focusable descendants of the specified element.
         /// </summary>
         /// <param name="element">The element.</param>
-        /// <returns>The element's focusable descendents.</returns>
-        private static IEnumerable<IInputElement> GetFocusableDescendents(IInputElement element)
+        /// <returns>The element's focusable descendants.</returns>
+        private static IEnumerable<IInputElement> GetFocusableDescendants(IInputElement element)
         {
             var children = element.GetVisualChildren().OfType<IInputElement>();
 
@@ -99,11 +99,11 @@ namespace Avalonia.Input.Navigation
                     yield return child;
                 }
 
-                if (child.CanFocusDescendents())
+                if (child.CanFocusDescendants())
                 {
-                    foreach (var descendent in GetFocusableDescendents(child))
+                    foreach (var descendant in GetFocusableDescendants(child))
                     {
-                        yield return descendent;
+                        yield return descendant;
                     }
                 }
             }
@@ -123,11 +123,11 @@ namespace Avalonia.Input.Navigation
         {
             if (direction == NavigationDirection.Down)
             {
-                var descendent = GetFocusableDescendents(element).FirstOrDefault();
+                var descendant = GetFocusableDescendants(element).FirstOrDefault();
 
-                if (descendent != null)
+                if (descendant != null)
                 {
-                    return descendent;
+                    return descendant;
                 }
             }
 
@@ -156,11 +156,11 @@ namespace Avalonia.Input.Navigation
 
                 if (element != null && direction == NavigationDirection.Up)
                 {
-                    var descendent = GetFocusableDescendents(element).LastOrDefault();
+                    var descendant = GetFocusableDescendants(element).LastOrDefault();
 
-                    if (descendent != null)
+                    if (descendant != null)
                     {
-                        return descendent;
+                        return descendant;
                     }
                 }
 
@@ -193,7 +193,7 @@ namespace Avalonia.Input.Navigation
 
                 var siblings = parent.GetVisualChildren()
                     .OfType<IInputElement>()
-                    .Where(FocusExtensions.CanFocusDescendents);
+                    .Where(FocusExtensions.CanFocusDescendants);
                 var sibling = isForward ? 
                     siblings.SkipWhile(x => x != container).Skip(1).FirstOrDefault() : 
                     siblings.TakeWhile(x => x != container).LastOrDefault();
@@ -207,8 +207,8 @@ namespace Avalonia.Input.Navigation
                     else
                     {
                         next = isForward ?
-                            GetFocusableDescendents(sibling).FirstOrDefault() :
-                            GetFocusableDescendents(sibling).LastOrDefault();
+                            GetFocusableDescendants(sibling).FirstOrDefault() :
+                            GetFocusableDescendants(sibling).LastOrDefault();
                     }
                 }
 
@@ -220,8 +220,8 @@ namespace Avalonia.Input.Navigation
             else
             {
                 next = isForward ?
-                    GetFocusableDescendents(container).FirstOrDefault() :
-                    GetFocusableDescendents(container).LastOrDefault();
+                    GetFocusableDescendants(container).FirstOrDefault() :
+                    GetFocusableDescendants(container).LastOrDefault();
             }
 
             return next;
diff --git a/src/Avalonia.Input/Navigation/FocusExtensions.cs b/src/Avalonia.Input/Navigation/FocusExtensions.cs
index 36fda1abb1..41e7c4cd7b 100644
--- a/src/Avalonia.Input/Navigation/FocusExtensions.cs
+++ b/src/Avalonia.Input/Navigation/FocusExtensions.cs
@@ -16,10 +16,10 @@ namespace Avalonia.Input.Navigation
         public static bool CanFocus(this IInputElement e) => e.Focusable && e.IsEnabledCore && e.IsVisible;
 
         /// <summary>
-        /// Checks if descendents of the specified element can be focused.
+        /// Checks if descendants of the specified element can be focused.
         /// </summary>
         /// <param name="e">The element.</param>
-        /// <returns>True if descendents of the element can be focused.</returns>
-        public static bool CanFocusDescendents(this IInputElement e) => e.IsEnabledCore && e.IsVisible;
+        /// <returns>True if descendants of the element can be focused.</returns>
+        public static bool CanFocusDescendants(this IInputElement e) => e.IsEnabledCore && e.IsVisible;
     }
 }
diff --git a/src/Avalonia.Input/Navigation/TabNavigation.cs b/src/Avalonia.Input/Navigation/TabNavigation.cs
index bc3826d90e..6ba7ab1a0c 100644
--- a/src/Avalonia.Input/Navigation/TabNavigation.cs
+++ b/src/Avalonia.Input/Navigation/TabNavigation.cs
@@ -44,7 +44,7 @@ namespace Avalonia.Input.Navigation
                                GetFirstInNextContainer(element, direction);
                     case KeyboardNavigationMode.Cycle:
                         return GetNextInContainer(element, container, direction) ??
-                               GetFocusableDescendent(container, direction);
+                               GetFocusableDescendant(container, direction);
                     case KeyboardNavigationMode.Contained:
                         return GetNextInContainer(element, container, direction);
                     default:
@@ -53,29 +53,29 @@ namespace Avalonia.Input.Navigation
             }
             else
             {
-                return GetFocusableDescendents(element).FirstOrDefault();
+                return GetFocusableDescendants(element).FirstOrDefault();
             }
         }
 
         /// <summary>
-        /// Gets the first or last focusable descendent of the specified element.
+        /// Gets the first or last focusable descendant of the specified element.
         /// </summary>
         /// <param name="container">The element.</param>
         /// <param name="direction">The direction to search.</param>
         /// <returns>The element or null if not found.##</returns>
-        private static IInputElement GetFocusableDescendent(IInputElement container, NavigationDirection direction)
+        private static IInputElement GetFocusableDescendant(IInputElement container, NavigationDirection direction)
         {
             return direction == NavigationDirection.Next ?
-                GetFocusableDescendents(container).FirstOrDefault() :
-                GetFocusableDescendents(container).LastOrDefault();
+                GetFocusableDescendants(container).FirstOrDefault() :
+                GetFocusableDescendants(container).LastOrDefault();
         }
 
         /// <summary>
-        /// Gets the focusable descendents of the specified element.
+        /// Gets the focusable descendants of the specified element.
         /// </summary>
         /// <param name="element">The element.</param>
-        /// <returns>The element's focusable descendents.</returns>
-        private static IEnumerable<IInputElement> GetFocusableDescendents(IInputElement element)
+        /// <returns>The element's focusable descendants.</returns>
+        private static IEnumerable<IInputElement> GetFocusableDescendants(IInputElement element)
         {
             var mode = KeyboardNavigation.GetTabNavigation((InputElement)element);
 
@@ -108,11 +108,11 @@ namespace Avalonia.Input.Navigation
                     yield return child;
                 }
 
-                if (child.CanFocusDescendents())
+                if (child.CanFocusDescendants())
                 {
-                    foreach (var descendent in GetFocusableDescendents(child))
+                    foreach (var descendant in GetFocusableDescendants(child))
                     {
-                        yield return descendent;
+                        yield return descendant;
                     }
                 }
             }
@@ -132,11 +132,11 @@ namespace Avalonia.Input.Navigation
         {
             if (direction == NavigationDirection.Next)
             {
-                var descendent = GetFocusableDescendents(element).FirstOrDefault();
+                var descendant = GetFocusableDescendants(element).FirstOrDefault();
 
-                if (descendent != null)
+                if (descendant != null)
                 {
-                    return descendent;
+                    return descendant;
                 }
             }
 
@@ -167,11 +167,11 @@ namespace Avalonia.Input.Navigation
 
                 if (element != null && direction == NavigationDirection.Previous)
                 {
-                    var descendent = GetFocusableDescendents(element).LastOrDefault();
+                    var descendant = GetFocusableDescendants(element).LastOrDefault();
 
-                    if (descendent != null)
+                    if (descendant != null)
                     {
-                        return descendent;
+                        return descendant;
                     }
                 }
 
@@ -203,7 +203,7 @@ namespace Avalonia.Input.Navigation
 
                 var siblings = parent.GetVisualChildren()
                     .OfType<IInputElement>()
-                    .Where(FocusExtensions.CanFocusDescendents);
+                    .Where(FocusExtensions.CanFocusDescendants);
                 var sibling = direction == NavigationDirection.Next ? 
                     siblings.SkipWhile(x => x != container).Skip(1).FirstOrDefault() : 
                     siblings.TakeWhile(x => x != container).LastOrDefault();
@@ -217,8 +217,8 @@ namespace Avalonia.Input.Navigation
                     else
                     {
                         next = direction == NavigationDirection.Next ?
-                            GetFocusableDescendents(sibling).FirstOrDefault() :
-                            GetFocusableDescendents(sibling).LastOrDefault();
+                            GetFocusableDescendants(sibling).FirstOrDefault() :
+                            GetFocusableDescendants(sibling).LastOrDefault();
                     }
                 }
 
@@ -230,8 +230,8 @@ namespace Avalonia.Input.Navigation
             else
             {
                 next = direction == NavigationDirection.Next ?
-                    GetFocusableDescendents(container).FirstOrDefault() :
-                    GetFocusableDescendents(container).LastOrDefault();
+                    GetFocusableDescendants(container).FirstOrDefault() :
+                    GetFocusableDescendants(container).LastOrDefault();
             }
 
             return next;
diff --git a/src/Avalonia.Layout/Layoutable.cs b/src/Avalonia.Layout/Layoutable.cs
index 95a0dd625c..20050058bf 100644
--- a/src/Avalonia.Layout/Layoutable.cs
+++ b/src/Avalonia.Layout/Layoutable.cs
@@ -612,7 +612,7 @@ namespace Avalonia.Layout
         /// <inheritdoc/>
         protected override sealed void OnVisualParentChanged(IVisual oldParent, IVisual newParent)
         {
-            foreach (ILayoutable i in this.GetSelfAndVisualDescendents())
+            foreach (ILayoutable i in this.GetSelfAndVisualDescendants())
             {
                 i.InvalidateMeasure();
             }
diff --git a/src/Avalonia.Styling/LogicalTree/LogicalExtensions.cs b/src/Avalonia.Styling/LogicalTree/LogicalExtensions.cs
index 0d9c0f6daa..a72a558258 100644
--- a/src/Avalonia.Styling/LogicalTree/LogicalExtensions.cs
+++ b/src/Avalonia.Styling/LogicalTree/LogicalExtensions.cs
@@ -37,15 +37,15 @@ namespace Avalonia.LogicalTree
             return logical.LogicalChildren;
         }
 
-        public static IEnumerable<ILogical> GetLogicalDescendents(this ILogical logical)
+        public static IEnumerable<ILogical> GetLogicalDescendants(this ILogical logical)
         {
             foreach (ILogical child in logical.LogicalChildren)
             {
                 yield return child;
 
-                foreach (ILogical descendent in child.GetLogicalDescendents())
+                foreach (ILogical descendant in child.GetLogicalDescendants())
                 {
-                    yield return descendent;
+                    yield return descendant;
                 }
             }
         }
diff --git a/src/Avalonia.Styling/Styling/DescendentSelector.cs b/src/Avalonia.Styling/Styling/DescendentSelector.cs
index 525f31cbf1..943b3f0161 100644
--- a/src/Avalonia.Styling/Styling/DescendentSelector.cs
+++ b/src/Avalonia.Styling/Styling/DescendentSelector.cs
@@ -7,16 +7,16 @@ using Avalonia.LogicalTree;
 
 namespace Avalonia.Styling
 {
-    internal class DescendentSelector : Selector
+    internal class DescendantSelector : Selector
     {
         private readonly Selector _parent;
         private string _selectorString;
 
-        public DescendentSelector(Selector parent)
+        public DescendantSelector(Selector parent)
         {
             if (parent == null)
             {
-                throw new InvalidOperationException("Descendent selector must be preceeded by a selector.");
+                throw new InvalidOperationException("Descendant selector must be preceeded by a selector.");
             }
 
             _parent = parent;
@@ -41,7 +41,7 @@ namespace Avalonia.Styling
         protected override SelectorMatch Evaluate(IStyleable control, bool subscribe)
         {
             ILogical c = (ILogical)control;
-            List<IObservable<bool>> descendentMatches = new List<IObservable<bool>>();
+            List<IObservable<bool>> descendantMatches = new List<IObservable<bool>>();
 
             while (c != null)
             {
@@ -60,14 +60,14 @@ namespace Avalonia.Styling
                     }
                     else
                     {
-                        descendentMatches.Add(match.ObservableResult);
+                        descendantMatches.Add(match.ObservableResult);
                     }
                 }
             }
 
-            if (descendentMatches.Count > 0)
+            if (descendantMatches.Count > 0)
             {
-                return new SelectorMatch(StyleActivator.Or(descendentMatches));
+                return new SelectorMatch(StyleActivator.Or(descendantMatches));
             }
             else
             {
diff --git a/src/Avalonia.Styling/Styling/Selectors.cs b/src/Avalonia.Styling/Styling/Selectors.cs
index 1b4c876f81..c91cc7af04 100644
--- a/src/Avalonia.Styling/Styling/Selectors.cs
+++ b/src/Avalonia.Styling/Styling/Selectors.cs
@@ -42,13 +42,13 @@ namespace Avalonia.Styling
         }
 
         /// <summary>
-        /// Returns a selector which matches a descendent of a previous selector.
+        /// Returns a selector which matches a descendant of a previous selector.
         /// </summary>
         /// <param name="previous">The previous selector.</param>
         /// <returns>The selector.</returns>
-        public static Selector Descendent(this Selector previous)
+        public static Selector Descendant(this Selector previous)
         {
-            return new DescendentSelector(previous);
+            return new DescendantSelector(previous);
         }
 
         /// <summary>
diff --git a/src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs b/src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs
index 4879532d6e..7d2222e449 100644
--- a/src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs
+++ b/src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs
@@ -164,7 +164,7 @@ namespace Avalonia.Rendering
 
         private static void ClearTransformedBounds(IVisual visual)
         {
-            foreach (var e in visual.GetSelfAndVisualDescendents())
+            foreach (var e in visual.GetSelfAndVisualDescendants())
             {
                 BoundsTracker.SetTransformedBounds((Visual)visual, null);
             }
diff --git a/src/Avalonia.Visuals/Visual.cs b/src/Avalonia.Visuals/Visual.cs
index 20772d8f0d..cfe6bce7e0 100644
--- a/src/Avalonia.Visuals/Visual.cs
+++ b/src/Avalonia.Visuals/Visual.cs
@@ -314,7 +314,7 @@ namespace Avalonia
 
         /// <summary>
         /// Calls the <see cref="OnAttachedToVisualTree(VisualTreeAttachmentEventArgs)"/> method 
-        /// for this control and all of its visual descendents.
+        /// for this control and all of its visual descendants.
         /// </summary>
         /// <param name="e">The event args.</param>
         protected virtual void OnAttachedToVisualTreeCore(VisualTreeAttachmentEventArgs e)
@@ -342,7 +342,7 @@ namespace Avalonia
 
         /// <summary>
         /// Calls the <see cref="OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs)"/> method 
-        /// for this control and all of its visual descendents.
+        /// for this control and all of its visual descendants.
         /// </summary>
         /// <param name="e">The event args.</param>
         protected virtual void OnDetachedFromVisualTreeCore(VisualTreeAttachmentEventArgs e)
@@ -422,7 +422,7 @@ namespace Avalonia
 
                 if (visual == null)
                 {
-                    throw new ArgumentException("'visual' is not a descendent of 'ancestor'.");
+                    throw new ArgumentException("'visual' is not a descendant of 'ancestor'.");
                 }
             }
 
diff --git a/src/Avalonia.Visuals/VisualTree/VisualExtensions.cs b/src/Avalonia.Visuals/VisualTree/VisualExtensions.cs
index 11fbae4321..289c4134d1 100644
--- a/src/Avalonia.Visuals/VisualTree/VisualExtensions.cs
+++ b/src/Avalonia.Visuals/VisualTree/VisualExtensions.cs
@@ -123,33 +123,33 @@ namespace Avalonia.VisualTree
         }
 
         /// <summary>
-        /// Enumerates the descendents of an <see cref="IVisual"/> in the visual tree.
+        /// Enumerates the descendants of an <see cref="IVisual"/> in the visual tree.
         /// </summary>
         /// <param name="visual">The visual.</param>
         /// <returns>The visual's ancestors.</returns>
-        public static IEnumerable<IVisual> GetVisualDescendents(this IVisual visual)
+        public static IEnumerable<IVisual> GetVisualDescendants(this IVisual visual)
         {
             foreach (IVisual child in visual.VisualChildren)
             {
                 yield return child;
 
-                foreach (IVisual descendent in child.GetVisualDescendents())
+                foreach (IVisual descendant in child.GetVisualDescendants())
                 {
-                    yield return descendent;
+                    yield return descendant;
                 }
             }
         }
 
         /// <summary>
-        /// Enumerates an <see cref="IVisual"/> and its descendents in the visual tree.
+        /// Enumerates an <see cref="IVisual"/> and its descendants in the visual tree.
         /// </summary>
         /// <param name="visual">The visual.</param>
         /// <returns>The visual and its ancestors.</returns>
-        public static IEnumerable<IVisual> GetSelfAndVisualDescendents(this IVisual visual)
+        public static IEnumerable<IVisual> GetSelfAndVisualDescendants(this IVisual visual)
         {
             yield return visual;
 
-            foreach (var ancestor in visual.GetVisualDescendents())
+            foreach (var ancestor in visual.GetVisualDescendants())
             {
                 yield return ancestor;
             }
@@ -196,7 +196,7 @@ namespace Avalonia.VisualTree
         /// Tests whether an <see cref="IVisual"/> is an ancestor of another visual.
         /// </summary>
         /// <param name="visual">The visual.</param>
-        /// <param name="target">The potential descendent.</param>
+        /// <param name="target">The potential descendant.</param>
         /// <returns>
         /// True if <paramref name="visual"/> is an ancestor of <paramref name="target"/>;
         /// otherwise false.
diff --git a/src/Markup/Avalonia.Markup.Xaml/Parsers/SelectorGrammar.cs b/src/Markup/Avalonia.Markup.Xaml/Parsers/SelectorGrammar.cs
index d11df1a9e9..671fdfff30 100644
--- a/src/Markup/Avalonia.Markup.Xaml/Parsers/SelectorGrammar.cs
+++ b/src/Markup/Avalonia.Markup.Xaml/Parsers/SelectorGrammar.cs
@@ -93,9 +93,9 @@ namespace Avalonia.Markup.Xaml.Parsers
 
         public static readonly Parser<ChildSyntax> Child = Parse.Char('>').Token().Return(new ChildSyntax());
 
-        public static readonly Parser<DescendentSyntax> Descendent =
+        public static readonly Parser<DescendantSyntax> Descendant =
             from child in Parse.WhiteSpace.Many()
-            select new DescendentSyntax();
+            select new DescendantSyntax();
 
         public static readonly Parser<TemplateSyntax> Template =
             from template in Parse.String("/template/").Token()
@@ -115,7 +115,7 @@ namespace Avalonia.Markup.Xaml.Parsers
             .Or<ISyntax>(Property)
             .Or<ISyntax>(Child)
             .Or<ISyntax>(Template)
-            .Or<ISyntax>(Descendent);
+            .Or<ISyntax>(Descendant);
 
         public static readonly Parser<IEnumerable<ISyntax>> Selector = SingleSelector.Many().End();
         
@@ -191,11 +191,11 @@ namespace Avalonia.Markup.Xaml.Parsers
             }
         }
 
-        public class DescendentSyntax : ISyntax
+        public class DescendantSyntax : ISyntax
         {
             public override bool Equals(object obj)
             {
-                return obj is DescendentSyntax;
+                return obj is DescendantSyntax;
             }
         }
 
diff --git a/src/Markup/Avalonia.Markup.Xaml/Parsers/SelectorParser.cs b/src/Markup/Avalonia.Markup.Xaml/Parsers/SelectorParser.cs
index c4a7e188c6..1cecb21f17 100644
--- a/src/Markup/Avalonia.Markup.Xaml/Parsers/SelectorParser.cs
+++ b/src/Markup/Avalonia.Markup.Xaml/Parsers/SelectorParser.cs
@@ -47,7 +47,7 @@ namespace Avalonia.Markup.Xaml.Parsers
                 var name = i as SelectorGrammar.NameSyntax;
                 var property = i as SelectorGrammar.PropertySyntax;
                 var child = i as SelectorGrammar.ChildSyntax;
-                var descendent = i as SelectorGrammar.DescendentSyntax;
+                var descendant = i as SelectorGrammar.DescendantSyntax;
                 var template = i as SelectorGrammar.TemplateSyntax;
 
                 if (ofType != null)
@@ -102,9 +102,9 @@ namespace Avalonia.Markup.Xaml.Parsers
                 {
                     result = result.Child();
                 }
-                else if (descendent != null)
+                else if (descendant != null)
                 {
-                    result = result.Descendent();
+                    result = result.Descendant();
                 }
                 else if (template != null)
                 {
diff --git a/tests/Avalonia.Controls.UnitTests/ListBoxTests.cs b/tests/Avalonia.Controls.UnitTests/ListBoxTests.cs
index a588e88eb2..e58542bfb4 100644
--- a/tests/Avalonia.Controls.UnitTests/ListBoxTests.cs
+++ b/tests/Avalonia.Controls.UnitTests/ListBoxTests.cs
@@ -245,7 +245,7 @@ namespace Avalonia.Controls.UnitTests
 
             // The items were created before the template was applied, so now we need to go back
             // and re-arrange everything.
-            foreach (IControl i in target.GetSelfAndVisualDescendents())
+            foreach (IControl i in target.GetSelfAndVisualDescendants())
             {
                 i.InvalidateMeasure();
             }
diff --git a/tests/Avalonia.Controls.UnitTests/Presenters/ScrollContentPresenterTests.cs b/tests/Avalonia.Controls.UnitTests/Presenters/ScrollContentPresenterTests.cs
index 33ed26d6d8..ab16552e12 100644
--- a/tests/Avalonia.Controls.UnitTests/Presenters/ScrollContentPresenterTests.cs
+++ b/tests/Avalonia.Controls.UnitTests/Presenters/ScrollContentPresenterTests.cs
@@ -219,7 +219,7 @@ namespace Avalonia.Controls.UnitTests.Presenters
         }
 
         [Fact]
-        public void BringDescendentIntoView_Should_Update_Offset()
+        public void BringDescendantIntoView_Should_Update_Offset()
         {
             var target = new ScrollContentPresenter
             {
@@ -235,13 +235,13 @@ namespace Avalonia.Controls.UnitTests.Presenters
             target.UpdateChild();
             target.Measure(Size.Infinity);
             target.Arrange(new Rect(0, 0, 100, 100));
-            target.BringDescendentIntoView(target.Child, new Rect(200, 200, 0, 0));
+            target.BringDescendantIntoView(target.Child, new Rect(200, 200, 0, 0));
 
             Assert.Equal(new Vector(100, 100), target.Offset);
         }
 
         [Fact]
-        public void BringDescendentIntoView_Should_Handle_Child_Margin()
+        public void BringDescendantIntoView_Should_Handle_Child_Margin()
         {
             Border border;
             var target = new ScrollContentPresenter
@@ -262,7 +262,7 @@ namespace Avalonia.Controls.UnitTests.Presenters
             target.UpdateChild();
             target.Measure(Size.Infinity);
             target.Arrange(new Rect(0, 0, 100, 100));
-            target.BringDescendentIntoView(border, new Rect(200, 200, 0, 0));
+            target.BringDescendantIntoView(border, new Rect(200, 200, 0, 0));
 
             Assert.Equal(new Vector(150, 150), target.Offset);
         }
diff --git a/tests/Avalonia.Controls.UnitTests/Primitives/PopupTests.cs b/tests/Avalonia.Controls.UnitTests/Primitives/PopupTests.cs
index 367070b37a..f192e87f08 100644
--- a/tests/Avalonia.Controls.UnitTests/Primitives/PopupTests.cs
+++ b/tests/Avalonia.Controls.UnitTests/Primitives/PopupTests.cs
@@ -222,7 +222,7 @@ namespace Avalonia.Controls.UnitTests.Primitives
                 popup.Open();
                 var popupRoot = popup.PopupRoot;
 
-                var children = popupRoot.GetVisualDescendents().ToList();
+                var children = popupRoot.GetVisualDescendants().ToList();
                 var types = children.Select(x => x.GetType().Name).ToList();
 
                 Assert.Equal(
diff --git a/tests/Avalonia.Controls.UnitTests/Primitives/TemplatedControlTests.cs b/tests/Avalonia.Controls.UnitTests/Primitives/TemplatedControlTests.cs
index 3c2f2e4f5c..636492ed1c 100644
--- a/tests/Avalonia.Controls.UnitTests/Primitives/TemplatedControlTests.cs
+++ b/tests/Avalonia.Controls.UnitTests/Primitives/TemplatedControlTests.cs
@@ -78,7 +78,7 @@ namespace Avalonia.Controls.UnitTests.Primitives
 
             target.ApplyTemplate();
 
-            var types = target.GetVisualDescendents().Select(x => x.GetType()).ToList();
+            var types = target.GetVisualDescendants().Select(x => x.GetType()).ToList();
 
             Assert.Equal(
                 new[]
@@ -135,7 +135,7 @@ namespace Avalonia.Controls.UnitTests.Primitives
 
             target.ApplyTemplate();
 
-            var templatedParents = target.GetVisualDescendents()
+            var templatedParents = target.GetVisualDescendants()
                 .OfType<IControl>()
                 .Select(x => x.TemplatedParent)
                 .ToList();
diff --git a/tests/Avalonia.Controls.UnitTests/TreeViewTests.cs b/tests/Avalonia.Controls.UnitTests/TreeViewTests.cs
index eb0ee5a231..52d36a33fa 100644
--- a/tests/Avalonia.Controls.UnitTests/TreeViewTests.cs
+++ b/tests/Avalonia.Controls.UnitTests/TreeViewTests.cs
@@ -80,7 +80,7 @@ namespace Avalonia.Controls.UnitTests
         }
 
         [Fact]
-        public void Root_TreeContainerFromItem_Should_Return_Descendent_Item()
+        public void Root_TreeContainerFromItem_Should_Return_Descendant_Item()
         {
             var tree = CreateTestTreeData();
             var target = new TreeView
diff --git a/tests/Avalonia.Interactivity.UnitTests/InteractiveTests.cs b/tests/Avalonia.Interactivity.UnitTests/InteractiveTests.cs
index dd0974fad0..067cf85c3c 100644
--- a/tests/Avalonia.Interactivity.UnitTests/InteractiveTests.cs
+++ b/tests/Avalonia.Interactivity.UnitTests/InteractiveTests.cs
@@ -391,7 +391,7 @@ namespace Avalonia.Interactivity.UnitTests
 
             if (handler != null)
             {
-                foreach (var i in tree.GetSelfAndVisualDescendents().Cast<Interactive>())
+                foreach (var i in tree.GetSelfAndVisualDescendants().Cast<Interactive>())
                 {
                     i.AddHandler(ev, handler, handlerRoutes, handledEventsToo);
                 }
diff --git a/tests/Avalonia.Layout.UnitTests/MeasureTests.cs b/tests/Avalonia.Layout.UnitTests/MeasureTests.cs
index 570628b5b7..99983fd19b 100644
--- a/tests/Avalonia.Layout.UnitTests/MeasureTests.cs
+++ b/tests/Avalonia.Layout.UnitTests/MeasureTests.cs
@@ -45,7 +45,7 @@ namespace Avalonia.Layout.UnitTests
         }
 
         [Fact]
-        public void Removing_From_Parent_Should_Invalidate_Measure_Of_Control_And_Descendents()
+        public void Removing_From_Parent_Should_Invalidate_Measure_Of_Control_And_Descendants()
         {
             var panel = new StackPanel();
             var child2 = new Border();
diff --git a/tests/Avalonia.Markup.Xaml.UnitTests/Parsers/SelectorGrammarTests.cs b/tests/Avalonia.Markup.Xaml.UnitTests/Parsers/SelectorGrammarTests.cs
index 676d6288d6..ad2c1bf8d3 100644
--- a/tests/Avalonia.Markup.Xaml.UnitTests/Parsers/SelectorGrammarTests.cs
+++ b/tests/Avalonia.Markup.Xaml.UnitTests/Parsers/SelectorGrammarTests.cs
@@ -157,7 +157,7 @@ namespace Avalonia.Xaml.Base.UnitTest.Parsers
         }
 
         [Fact]
-        public void OfType_Descendent_Class()
+        public void OfType_Descendant_Class()
         {
             var result = SelectorGrammar.Selector.Parse("Button .foo").ToList();
 
@@ -165,7 +165,7 @@ namespace Avalonia.Xaml.Base.UnitTest.Parsers
                 new SelectorGrammar.ISyntax[]
                 {
                     new SelectorGrammar.OfTypeSyntax { TypeName = "Button" },
-                    new SelectorGrammar.DescendentSyntax { },
+                    new SelectorGrammar.DescendantSyntax { },
                     new SelectorGrammar.ClassSyntax { Class = "foo" },
                 },
                 result);
diff --git a/tests/Avalonia.Styling.UnitTests/SelectorTests_Descendent.cs b/tests/Avalonia.Styling.UnitTests/SelectorTests_Descendent.cs
index 38491f9164..b4c284e7c9 100644
--- a/tests/Avalonia.Styling.UnitTests/SelectorTests_Descendent.cs
+++ b/tests/Avalonia.Styling.UnitTests/SelectorTests_Descendent.cs
@@ -14,23 +14,23 @@ using Xunit;
 
 namespace Avalonia.Styling.UnitTests
 {
-    public class SelectorTests_Descendent
+    public class SelectorTests_Descendant
     {
         [Fact]
-        public void Descendent_Matches_Control_When_It_Is_Child_OfType()
+        public void Descendant_Matches_Control_When_It_Is_Child_OfType()
         {
             var parent = new TestLogical1();
             var child = new TestLogical2();
 
             child.LogicalParent = parent;
 
-            var selector = default(Selector).OfType<TestLogical1>().Descendent().OfType<TestLogical2>();
+            var selector = default(Selector).OfType<TestLogical1>().Descendant().OfType<TestLogical2>();
 
             Assert.True(selector.Match(child).ImmediateResult);
         }
 
         [Fact]
-        public void Descendent_Matches_Control_When_It_Is_Descendent_OfType()
+        public void Descendant_Matches_Control_When_It_Is_Descendant_OfType()
         {
             var grandparent = new TestLogical1();
             var parent = new TestLogical2();
@@ -39,13 +39,13 @@ namespace Avalonia.Styling.UnitTests
             parent.LogicalParent = grandparent;
             child.LogicalParent = parent;
 
-            var selector = default(Selector).OfType<TestLogical1>().Descendent().OfType<TestLogical3>();
+            var selector = default(Selector).OfType<TestLogical1>().Descendant().OfType<TestLogical3>();
 
             Assert.True(selector.Match(child).ImmediateResult);
         }
 
         [Fact]
-        public async Task Descendent_Matches_Control_When_It_Is_Descendent_OfType_And_Class()
+        public async Task Descendant_Matches_Control_When_It_Is_Descendant_OfType_And_Class()
         {
             var grandparent = new TestLogical1();
             var parent = new TestLogical2();
@@ -55,14 +55,14 @@ namespace Avalonia.Styling.UnitTests
             parent.LogicalParent = grandparent;
             child.LogicalParent = parent;
 
-            var selector = default(Selector).OfType<TestLogical1>().Class("foo").Descendent().OfType<TestLogical3>();
+            var selector = default(Selector).OfType<TestLogical1>().Class("foo").Descendant().OfType<TestLogical3>();
             var activator = selector.Match(child).ObservableResult;
 
             Assert.True(await activator.Take(1));
         }
 
         [Fact]
-        public async Task Descendent_Doesnt_Match_Control_When_It_Is_Descendent_OfType_But_Wrong_Class()
+        public async Task Descendant_Doesnt_Match_Control_When_It_Is_Descendant_OfType_But_Wrong_Class()
         {
             var grandparent = new TestLogical1();
             var parent = new TestLogical2();
@@ -73,14 +73,14 @@ namespace Avalonia.Styling.UnitTests
             parent.Classes.Add("foo");
             child.LogicalParent = parent;
 
-            var selector = default(Selector).OfType<TestLogical1>().Class("foo").Descendent().OfType<TestLogical3>();
+            var selector = default(Selector).OfType<TestLogical1>().Class("foo").Descendant().OfType<TestLogical3>();
             var activator = selector.Match(child).ObservableResult;
 
             Assert.False(await activator.Take(1));
         }
 
         [Fact]
-        public async Task Descendent_Matches_Any_Ancestor()
+        public async Task Descendant_Matches_Any_Ancestor()
         {
             var grandparent = new TestLogical1();
             var parent = new TestLogical1();
@@ -89,7 +89,7 @@ namespace Avalonia.Styling.UnitTests
             parent.LogicalParent = grandparent;
             child.LogicalParent = parent;
 
-            var selector = default(Selector).OfType<TestLogical1>().Class("foo").Descendent().OfType<TestLogical3>();
+            var selector = default(Selector).OfType<TestLogical1>().Class("foo").Descendant().OfType<TestLogical3>();
             var activator = selector.Match(child).ObservableResult;
 
             Assert.False(await activator.Take(1));
@@ -104,9 +104,9 @@ namespace Avalonia.Styling.UnitTests
         }
 
         [Fact]
-        public void Descendent_Selector_Should_Have_Correct_String_Representation()
+        public void Descendant_Selector_Should_Have_Correct_String_Representation()
         {
-            var selector = default(Selector).OfType<TestLogical1>().Class("foo").Descendent().OfType<TestLogical3>();
+            var selector = default(Selector).OfType<TestLogical1>().Class("foo").Descendant().OfType<TestLogical3>();
 
             Assert.Equal("TestLogical1.foo TestLogical3", selector.ToString());
         }
diff --git a/tests/Avalonia.Styling.UnitTests/SelectorTests_Multiple.cs b/tests/Avalonia.Styling.UnitTests/SelectorTests_Multiple.cs
index 5a06734819..067b08b296 100644
--- a/tests/Avalonia.Styling.UnitTests/SelectorTests_Multiple.cs
+++ b/tests/Avalonia.Styling.UnitTests/SelectorTests_Multiple.cs
@@ -91,11 +91,11 @@ namespace Avalonia.Styling.UnitTests
         }
 
         [Fact]
-        public void TargetType_Descendent()
+        public void TargetType_Descendant()
         {
             var selector = default(Selector)
                 .OfType<Button>()
-                .Descendent()
+                .Descendant()
                 .OfType<TextBlock>();
 
             Assert.Equal(typeof(TextBlock), selector.TargetType);
diff --git a/tests/Avalonia.Visuals.UnitTests/VisualTests.cs b/tests/Avalonia.Visuals.UnitTests/VisualTests.cs
index e80d4f48f9..ec5f9a8c13 100644
--- a/tests/Avalonia.Visuals.UnitTests/VisualTests.cs
+++ b/tests/Avalonia.Visuals.UnitTests/VisualTests.cs
@@ -135,7 +135,7 @@ namespace Avalonia.Visuals.UnitTests
         }
 
         [Fact]
-        public void Descendents_Should_RetunVisualRoot()
+        public void Descendants_Should_RetunVisualRoot()
         {
             var root = new TestRoot();
             var child1 = new Decorator();