diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 44997f32a..25ad097a6 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -2306,8 +2306,8 @@ exists({expr})	The result is a Number, which is |TRUE| if {expr} is defined,
 <		There must be no space between the symbol (&/$/*/#) and the
 		name.
 		There must be no extra characters after the name, although in
-		a few cases this is ignored.  That may become more strict in
-		the future, thus don't count on it!
+		a few cases this is ignored.  That may become stricter in the
+		future, thus don't count on it!
 		Working example: >
 			exists(":make")
 <		NOT working example: >
@@ -5573,7 +5573,7 @@ mapset({dict})
 		Restore a mapping from a dictionary, possibly returned by
 		|maparg()| or |maplist()|.  A buffer mapping, when dict.buffer
 		is true, is set on the current buffer; it is up to the caller
-		to insure that the intended buffer is the current buffer. This
+		to ensure that the intended buffer is the current buffer. This
 		feature allows copying mappings from one buffer to another.
 		The dict.mode value may restore a single mapping that covers
 		more than one mode, like with mode values of '!', ' ', 'nox',
@@ -8324,7 +8324,7 @@ sort({list} [, {how} [, {dict}]])			*sort()* *E702*
 		If you want a list to remain unmodified make a copy first: >
 			:let sortedlist = sort(copy(mylist))
 
-<		When {how} is omitted or is an string, then sort() uses the
+<		When {how} is omitted or is a string, then sort() uses the
 		string representation of each item to sort on.  Numbers sort
 		after Strings, |Lists| after Numbers.  For sorting text in the
 		current buffer use |:sort|.
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index fd783288a..515dab366 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1511,7 +1511,7 @@ modes Conditional, Number, Statement, Comment, PreProc, Type, and String,
 following the language specifications in 'Symbolic Manipulation with FORM' by
 J.A.M. Vermaseren, CAN, Netherlands, 1991.
 
-If you want include your own changes to the default colors, you have to
+If you want to include your own changes to the default colors, you have to
 redefine the following syntax groups:
 
     - formConditional
@@ -5206,7 +5206,7 @@ guisp={color-name}					*highlight-guisp*
 	All values are hexadecimal, range from "00" to "ff".  Examples: >
             :highlight Comment guifg=#11f0c3 guibg=#ff00ff
 <
-	If you are authoring a color scheme and use the same hexademical value
+	If you are authoring a color scheme and use the same hexadecimal value
 	repeatedly, you can define a name for it in |v:colornames|. For
 	example: >