diff --git a/src/cascadia/TerminalControl/SearchBoxControl.xaml b/src/cascadia/TerminalControl/SearchBoxControl.xaml
index f390f07bbf2..494b71609aa 100644
--- a/src/cascadia/TerminalControl/SearchBoxControl.xaml
+++ b/src/cascadia/TerminalControl/SearchBoxControl.xaml
@@ -239,6 +239,7 @@
                  VerticalAlignment="Center"
                  CornerRadius="2"
                  FontSize="15"
+                 IsSpellCheckEnabled="False"
                  KeyDown="TextBoxKeyDown"
                  PlaceholderForeground="{ThemeResource TextBoxPlaceholderTextThemeBrush}" />
 
diff --git a/src/cascadia/TerminalSettingsEditor/Appearances.xaml b/src/cascadia/TerminalSettingsEditor/Appearances.xaml
index a2f715fd27e..7765d6626cd 100644
--- a/src/cascadia/TerminalSettingsEditor/Appearances.xaml
+++ b/src/cascadia/TerminalSettingsEditor/Appearances.xaml
@@ -206,6 +206,7 @@
                 <StackPanel Orientation="Vertical">
                     <StackPanel Orientation="Horizontal">
                         <TextBox IsEnabled="{x:Bind local:Converters.StringsAreNotEqual('desktopWallpaper', Appearance.BackgroundImagePath), Mode=OneWay}"
+                                 IsSpellCheckEnabled="False"
                                  Style="{StaticResource TextBoxSettingStyle}"
                                  Text="{x:Bind local:Converters.StringFallBackToEmptyString('desktopWallpaper', Appearance.BackgroundImagePath), Mode=TwoWay, BindBack=Appearance.SetBackgroundImagePath}" />
                         <Button x:Uid="Profile_BackgroundImageBrowse"
diff --git a/src/cascadia/TerminalSettingsEditor/Interaction.xaml b/src/cascadia/TerminalSettingsEditor/Interaction.xaml
index 72f8d21c2a2..2b540efa57e 100644
--- a/src/cascadia/TerminalSettingsEditor/Interaction.xaml
+++ b/src/cascadia/TerminalSettingsEditor/Interaction.xaml
@@ -46,7 +46,8 @@
 
             <!--  Word Delimiters  -->
             <local:SettingContainer x:Uid="Globals_WordDelimiters">
-                <TextBox Style="{StaticResource TextBoxSettingStyle}"
+                <TextBox IsSpellCheckEnabled="False"
+                         Style="{StaticResource TextBoxSettingStyle}"
                          Text="{x:Bind State.Globals.WordDelimiters, Mode=TwoWay}" />
             </local:SettingContainer>
 
diff --git a/src/cascadia/TerminalSettingsEditor/Profiles.xaml b/src/cascadia/TerminalSettingsEditor/Profiles.xaml
index 46e7e87efc7..5e11e2450f3 100644
--- a/src/cascadia/TerminalSettingsEditor/Profiles.xaml
+++ b/src/cascadia/TerminalSettingsEditor/Profiles.xaml
@@ -81,7 +81,8 @@
                                                 SettingOverrideSource="{x:Bind State.Profile.CommandlineOverrideSource, Mode=OneWay}"
                                                 Visibility="{x:Bind local:Converters.InvertedBooleanToVisibility(State.Profile.IsBaseLayer), Mode=OneWay}">
                             <StackPanel Orientation="Horizontal">
-                                <TextBox Style="{StaticResource TextBoxSettingStyle}"
+                                <TextBox IsSpellCheckEnabled="False"
+                                         Style="{StaticResource TextBoxSettingStyle}"
                                          Text="{x:Bind State.Profile.Commandline, Mode=TwoWay}" />
                                 <Button x:Uid="Profile_CommandlineBrowse"
                                         Click="Commandline_Click"
@@ -99,6 +100,7 @@
                             <StackPanel Orientation="Vertical">
                                 <StackPanel Orientation="Horizontal">
                                     <TextBox IsEnabled="{x:Bind State.Profile.UseCustomStartingDirectory, Mode=OneWay}"
+                                             IsSpellCheckEnabled="False"
                                              Style="{StaticResource TextBoxSettingStyle}"
                                              Text="{x:Bind State.Profile.StartingDirectory, Mode=TwoWay}" />
                                     <Button x:Name="StartingDirectoryBrowse"
@@ -120,6 +122,7 @@
                                                 SettingOverrideSource="{x:Bind State.Profile.IconOverrideSource, Mode=OneWay}">
                             <StackPanel Orientation="Horizontal">
                                 <TextBox FontFamily="Segoe UI, Segoe MDL2 Assets"
+                                         IsSpellCheckEnabled="False"
                                          Style="{StaticResource TextBoxSettingStyle}"
                                          Text="{x:Bind State.Profile.Icon, Mode=TwoWay}" />
                                 <Button x:Uid="Profile_IconBrowse"