Fuzzy hair sticks up in a soft, curly mass.

If something is fuzzy, it has a covering that feels soft and like fur.

A fuzzy picture, image, or sound is unclear and hard to see or hear.

If you or your thoughts are fuzzy, you are confused and cannot think clearly.

You describe something as fuzzy when it is vague and not clearly defined.

Fuzzy logic is a type of computer logic that is supposed to imitate the way that humans think, for example by adapting to changing circumstances rather than always following the same procedure.