diff --git a/calmwm.h b/calmwm.h
index b213312..7a758d1 100644
--- a/calmwm.h
+++ b/calmwm.h
@@ -150,6 +150,7 @@ struct client_ctx {
 #define CLIENT_VMAXIMIZED		0x0020
 #define CLIENT_DOHMAXIMIZE		0x0040
 #define CLIENT_HMAXIMIZED		0x0080
+#define CLIENT_FREEZE			0x0100
 	int			 flags;
 	int			 state;
 	int			 active;
@@ -314,6 +315,7 @@ struct client_ctx	*client_cycle(struct screen_ctx *, int);
 int			 client_delete(struct client_ctx *);
 void			 client_draw_border(struct client_ctx *);
 struct client_ctx	*client_find(Window);
+void			 client_freeze(struct client_ctx *);
 void			 client_getsizehints(struct client_ctx *);
 void			 client_hide(struct client_ctx *);
 void			 client_horizmaximize(struct client_ctx *);
@@ -368,6 +370,7 @@ void			 kbfunc_client_cycle(struct client_ctx *, union arg *);
 void			 kbfunc_client_cyclegroup(struct client_ctx *,
 			     union arg *);
 void			 kbfunc_client_delete(struct client_ctx *, union arg *);
+void			 kbfunc_client_freeze(struct client_ctx *, union arg *);
 void			 kbfunc_client_group(struct client_ctx *, union arg *);
 void			 kbfunc_client_grouponly(struct client_ctx *,
 			     union arg *);
diff --git a/client.c b/client.c
index 237c0ce..1767f44 100644
--- a/client.c
+++ b/client.c
@@ -264,6 +264,15 @@ client_current(void)
 	return (_curcc);
 }
 
+void
+client_freeze(struct client_ctx *cc)
+{
+	if (cc->flags & CLIENT_FREEZE)
+		cc->flags &= ~CLIENT_FREEZE;
+	else
+		cc->flags |= CLIENT_FREEZE;
+}
+
 void
 client_maximize(struct client_ctx *cc)
 {
@@ -271,6 +280,9 @@ client_maximize(struct client_ctx *cc)
 	int			 xmax = sc->xmax, ymax = sc->ymax;
 	int			 x_org = 0, y_org = 0;
 
+	if (cc->flags & CLIENT_FREEZE)
+		return;
+
 	if (cc->flags & CLIENT_MAXIMIZED) {
 		cc->geom = cc->savegeom;
 	} else {
@@ -310,6 +322,9 @@ client_vertmaximize(struct client_ctx *cc)
 	struct screen_ctx	*sc = cc->sc;
 	int			 y_org = 0, ymax = sc->ymax;
 
+	if (cc->flags & CLIENT_FREEZE)
+		return;
+
 	if (cc->flags & CLIENT_VMAXIMIZED) {
 		cc->geom = cc->savegeom;
 	} else {
@@ -341,6 +356,9 @@ client_horizmaximize(struct client_ctx *cc)
 	struct screen_ctx	*sc = cc->sc;
 	int			 x_org = 0, xmax = sc->xmax;
 
+	if (cc->flags & CLIENT_FREEZE)
+		return;
+
 	if (cc->flags & CLIENT_HMAXIMIZED) {
 		cc->geom = cc->savegeom;
 	} else {
diff --git a/conf.c b/conf.c
index b453405..f61099d 100644
--- a/conf.c
+++ b/conf.c
@@ -138,6 +138,7 @@ static struct {
 	{ "CM-f",	"maximize" },
 	{ "CM-equal",	"vmaximize" },
 	{ "CMS-equal",	"hmaximize" },
+	{ "CMS-f",	"freeze" },
 	{ "CMS-r",	"reload" },
 	{ "CMS-q",	"quit" },
 	{ "M-h",	"moveleft" },
@@ -361,6 +362,7 @@ static struct {
 	{ "maximize", kbfunc_client_maximize, KBFLAG_NEEDCLIENT, {0} },
 	{ "vmaximize", kbfunc_client_vmaximize, KBFLAG_NEEDCLIENT, {0} },
 	{ "hmaximize", kbfunc_client_hmaximize, KBFLAG_NEEDCLIENT, {0} },
+	{ "freeze", kbfunc_client_freeze, KBFLAG_NEEDCLIENT, {0} },
 	{ "reload", kbfunc_reload, 0, {0} },
 	{ "quit", kbfunc_quit_wm, 0, {0} },
 	{ "exec", kbfunc_exec, 0, {.i = CWM_EXEC_PROGRAM} },
diff --git a/cwm.1 b/cwm.1
index 1282798..1b82f12 100644
--- a/cwm.1
+++ b/cwm.1
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: August 24 2009 $
+.Dd $Mdocdate: September 25 2010 $
 .Dt CWM 1
 .Os
 .Sh NAME
@@ -88,6 +88,8 @@ Toggle group membership of current window.
 Cycle through active groups.
 .It Ic M-Left
 Reverse cycle through active groups.
+.It Ic CMS-f
+Toggle freezing geometry of current window.
 .It Ic CM-f
 Toggle full-screen size of current window.
 .It Ic CM-=
diff --git a/cwmrc.5 b/cwmrc.5
index 800e253..a0544ff 100644
--- a/cwmrc.5
+++ b/cwmrc.5
@@ -287,6 +287,8 @@ Lower current window.
 Raise current window.
 .It label
 Label current window.
+.It freeze
+Freeze current window geometry.
 .It maximize
 Maximize current window full-screen.
 .It vmaximize
diff --git a/kbfunc.c b/kbfunc.c
index c4ee7ed..fc2aede 100644
--- a/kbfunc.c
+++ b/kbfunc.c
@@ -58,6 +58,9 @@ kbfunc_moveresize(struct client_ctx *cc, union arg *arg)
 	int			 x, y, flags, amt;
 	u_int			 mx, my;
 
+	if (cc->flags & CLIENT_FREEZE)
+		return;
+
 	sc = cc->sc;
 	mx = my = 0;
 
@@ -479,6 +482,12 @@ kbfunc_client_hmaximize(struct client_ctx *cc, union arg *arg)
 	client_horizmaximize(cc);
 }
 
+void
+kbfunc_client_freeze(struct client_ctx *cc, union arg *arg)
+{
+	client_freeze(cc);
+}
+
 void
 kbfunc_quit_wm(struct client_ctx *cc, union arg *arg)
 {
diff --git a/mousefunc.c b/mousefunc.c
index 30eed53..c5537fa 100644
--- a/mousefunc.c
+++ b/mousefunc.c
@@ -84,6 +84,9 @@ mousefunc_window_resize(struct client_ctx *cc, void *arg)
 	struct screen_ctx	*sc = cc->sc;
 	int			 x = cc->geom.x, y = cc->geom.y;
 
+	if (cc->flags & CLIENT_FREEZE)
+		return;
+
 	client_raise(cc);
 	client_ptrsave(cc);
 
@@ -142,6 +145,9 @@ mousefunc_window_move(struct client_ctx *cc, void *arg)
 
 	client_raise(cc);
 
+	if (cc->flags & CLIENT_FREEZE)
+		return;
+
 	if (xu_ptr_grab(cc->win, MouseMask, Cursor_move) < 0)
 		return;