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1. suck up
Somebody who will generally do ANYTHING for another person, and they will agree to anything said by that person as well. They will never disagree nor argue no matter what. Also known as a sheep
Hey Omar, stop sucking up to Harry!
by Jimbob Apr 17, 2004 add a video
2. Suck up
An underling who likes to give an ego-logical boost to someone higher up on the ladder in order to gain power
HonorP00ner is a suck up
3. suck up
some1 that does anything to please a teacher often includes snitching.
"Macon the suck up brings an apple to the teacher everyday"
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