negation

For most simple negation you don't need any separate sign--you just shake your head negatively while signing.
For example, if I sign "I TEACHER" while shaking my head negatively, it means "I'm not a teacher."

DON'T:
Note: This sign isn't used for signs like "DON'T-LIKE" and "DON'T-WANT."  Such signs use "reversal of orientation for negation" instead.
I rarely use this sign unless I'm attempting to strongly emphasize a point.

NO:
This is the general sign for "no."
You can use either a single or a double motion.  (Meaning, you can close the fingers and thumb either once or twice.)

NYOB  (Yes, that is the intended order of letters it is not NOYB but rather NYOB).

I've always thought this was interesting...the sign for "It's none of your business."  It comes from the first letters of the words "none of your business" but the order is changed around a bit to be NYOB.  The reason is likely because it "rolls off the hand" much more smoothly than NYOB.  I haven't seen this sign for quite a while, (I guess I've been hanging out with a more polite group?), but it is such an interesting sign that I couldn't resist sharing it with you:  The movement is quick and ends with a type of flourish (in which you change from the O to the B in a sort of "be gone peasant" flick of the hand).

Also See:
don't-care
don't-mind
don't want
don't like

For the sign "negative" visit the "take-away" page and scroll down a bit.