Suppose you wanted to sign, "don't need."
You don't need a separate sign for "don't." Instead you can just shake your
head negatively while signing NEED.
![](dont-need-1s.jpg)
![](dont-need-2s.jpg)
![](dont-need-3s.jpg)
![](dont-need-4s.jpg)
Also see:
NEED
You can learn
American Sign Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars