To sign "not," form your hand into an "A" hand with the
thumb extending a bit more than normal. Place the thumb under your
chin. Quickly move your hand forward a few inches.
NOT / "un-"




Notes:
Generally you use a negative headshake with this sign. For the
sake of emphasis, you may see this sign done with a very strong
forceful movement and little or no head-shake. If you do this
sign with two hands it can mean "deny."
You can learn American Sign Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars