This sign can be used to say "NO" in a very nice way (or a not-nice
way...depends on the severity of which you shake your head, and how much
negativity you show via your face).
This sign is a good way to say "nuh uh" or "nah." It can be used to
mean "that's not what I intended," "I'm not into that," or
"no, not for me, thanks."
To do this sign, you wave the open five hand side to side while shaking your head.
NO-[wave]





You can modify this sign to use two hands which would then mean
something along the lines of: "Whoa!" or "Oh geeze, no!" "For
goodness sake, not that!"
Both hands, (palms forward, fingers spread) wave side to side.
WAVE-NO (stronger version)

Also see: "NO"
You can learn
American Sign Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars