diff --git a/usr.sbin/adduser/adduser.sh b/usr.sbin/adduser/adduser.sh
--- a/usr.sbin/adduser/adduser.sh
+++ b/usr.sbin/adduser/adduser.sh
@@ -565,7 +565,8 @@
 
 	if [ -z "$configflag" ]; then
 		[ -z "$fflag" ] && echo -n "Login group is $_group. Invite $username"
-		[ -z "$fflag" ] && echo -n " into other groups? [$ugroups]: "
+		[ -z "$fflag" ] && echo -n " into other groups? (e.g, wheel for su(1) root and video for accessing drm)"
+		[ -z "$fflag" ] && echo -n " [$ugroups]: "
 	else
 		[ -z "$fflag" ] && echo -n "Enter additional groups [$ugroups]: "
 	fi