diff --git a/man/autotype.texi b/man/autotype.texi
index 7e6397d6abd..6c0fc739b20 100644
--- a/man/autotype.texi
+++ b/man/autotype.texi
@@ -330,7 +330,7 @@ fingers backwards, this can be quite relieving too.
   This is done by binding the first key (@pxref{(emacs)Rebinding}) of
 the pair to @code{skeleton-pair-insert-maybe} instead of
 @code{self-insert-command}.  The ``maybe'' comes from the fact that
-this at-first surprising behaviour is initially turned off.  To enable
+this at-first surprising behavior is initially turned off.  To enable
 it, you must set @code{skeleton-pair} to some non-@code{nil} value.
 And even then, a positive argument (@pxref{(emacs)Arguments}) will
 make this key behave like a self-inserting key
@@ -347,7 +347,7 @@ character is part of a word.  If you want pairing to occur even then, set
 parenthesis @samp{(}, the square bracket @samp{[}, the brace
 @samp{@{}, the pointed bracket @samp{<} and the backquote @samp{`} all
 pair with the symmetrical character.  All other characters pair
-themselves.  This behaviour can be modified by the variable
+themselves.  This behavior can be modified by the variable
 @code{skeleton-pair-alist}.  This is in fact an alist of skeletons
 (@pxref{Skeleton Language}), with the first part of each sublist
 matching the typed character.  This is the position of the interactor,
@@ -646,7 +646,7 @@ completions in succession.
 
 Which ones to try, and in which order, is determined by the contents of
 the customizable option @code{hippie-expand-try-functions-list}.  Much
-customization of the expansion behaviour can be made by changing the
+customization of the expansion behavior can be made by changing the
 order of, removing, or inserting new functions in this list.  Given a
 positive numeric argument, @kbd{M-x hippie-expand} jumps directly that
 number of functions forward in this list.  Given some other argument (a
diff --git a/man/files.texi b/man/files.texi
index 905589f73f6..3cf01f3dbe0 100644
--- a/man/files.texi
+++ b/man/files.texi
@@ -536,7 +536,7 @@ be @file{eval.c~}.
 
 @vindex make-backup-file-name-function
 @vindex backup-directory-alist
-  You can change this behaviour by defining the variable
+  You can change this behavior by defining the variable
 @code{make-backup-file-name-function} to a suitable function.
 Alternatively you can customize the variable
 @code{backup-directory-alist} to specify that files matching certain
diff --git a/man/gnus.texi b/man/gnus.texi
index 64d42451179..42b6aa0f656 100644
--- a/man/gnus.texi
+++ b/man/gnus.texi
@@ -5188,7 +5188,7 @@ even though I haven't heard of anybody wanting it to go to the
 previous (unread) article, I'm sure there are people that want that as
 well.
 
-Multiply these five behaviours by five different marking commands, and
+Multiply these five behaviors by five different marking commands, and
 you get a potentially complex set of variable to control what each
 command should do.
 
@@ -15018,7 +15018,7 @@ disconnected, and synchronize these flags when you plug back in.
 Gnus keep track of flag changes when reading nnimap groups under the
 Agent by default.  When you plug back in, by default Gnus will check if
 you have any changed any flags and ask if you wish to synchronize these
-with the server.  This behaviour is customizable with
+with the server.  This behavior is customizable with
 @code{gnus-agent-synchronize-flags}.
 
 @vindex gnus-agent-synchronize-flags
diff --git a/man/misc.texi b/man/misc.texi
index 0282bf6a552..92ae9c3d3a7 100644
--- a/man/misc.texi
+++ b/man/misc.texi
@@ -2123,7 +2123,7 @@ which you might like to bind to keys, such as
 @code{browse-url-at-point} and @code{browse-url-at-mouse}.
 
 @vindex browse-url-browser-function
-  You can customize Browse-URL's behaviour via various options in the
+  You can customize Browse-URL's behavior via various options in the
 @code{browse-url} Customize group, particularly
 @code{browse-url-browser-function}.  You can invoke actions dependent
 on the type of URL by defining @code{browse-url-browser-function} as
diff --git a/man/text.texi b/man/text.texi
index ab94b51f133..b25fdfc9806 100644
--- a/man/text.texi
+++ b/man/text.texi
@@ -463,7 +463,7 @@ The section on init files says how to arrange this permanently for yourself.
 
   Refill minor mode provides support for keeping paragraphs filled as
 you type or modify them in other ways.  It provides an effect similar
-to typical word processor behaviour.  This works by running a
+to typical word processor behavior.  This works by running a
 paragraph-filling command at suitable times.
 
   When you are typing text, only characters which normally trigger