'sup 

The correctly spelled contraction for what's up.

Hmm...I don't know what to say 'sup yo!

'sup by Celestasia May 9, 2005

'sup 

1) The brief way of saying: "Hi, I'm really pathetic, what are you doing?"

2) Probably the worst response to any humane or initial greeting.

3) Okay if used when your under the influence, jocularly, and/or feel the need to be obnoxious for one hot sec.

1) Man sitting at bar with Corona: "'sup"
Woman trying to get a drink: "Oh! *Smacks forehead* I'm so sorry, but I don't understand all of the one word you just asked me or if it even if was a question at all"

2) Kind girl texting boy: Hey :) What's up??
Boy one hour later: "'sup."

3) Drunk tourist in cab: "Man, you do understand how epic tonight's gonna be, right?"
Hammered tourist friend: I know, dude! ETA 15 minutes... SUUUUUUUUUUUUUP ATOWNNN. We're about to Get It IN!

'sup by laughingturtle March 13, 2011

'Sup 

Shorter way of saying 'what's up' or 'how's it going'

'Sup bro?
Going good

'Sup by Tum Shin December 9, 2016

sup 

Sup is something cool people say. It can be used as a greeting. People say "sup" when they don't feel like saying whats up because it's to long. Also, people say "sup" because they get in the habit of saying "sup" so they just always say it. It can be used by girl or boy.

"Sup girl"
"Nothing much"
"Cool"
"Sup with you"
"Nothing"

sup by Cleo Defobio November 12, 2015

sup 

A term that cool people use because they are too damn lazy to say What's up. (Too much effort involved there man.)

"sup yo!"

sup by RockStarSurferChick March 21, 2003

sup 

Short for 'What's Up?'. 'What's Up?' is short for 'What is Up?', and 'What is Up?' is short for 'How are boring daily events in your life going?'.

Guy 1: 'Sup, man?
Guy 2: Pretty cool, man, you?

sup by A Person who uses a Pseudonym October 6, 2012

sup 

A contraction of the phrase "what's up?"

Jack: Hey, sup?
Jill: Not much

sup by Falkan March 4, 2003