sup

short for superscript.
as in, sup.
sup is often accompanied by a flicking of the head in a superscript direction. if you know the person and made an assessment about their current happening (no need to talk), you can flick in the subscript direction (a quick nod).
sup means nihao and nihaoma, ohio gozaimas and mushimushi. are you cool? are you high (positive)? are you chill? are you good? i.e. how are you (rhetorical).

sup?

Sup

Greating of boys

Sup my boi

SUP

Sup is a gang associated word, meaning "I hate you and want you dead." Many think the word sup means hello or what's up. Using the word sup can be seen as offensive to gang members and using it the wrong area can end up getting you and your family killed.

Sup my hommie. I hate you my hommie.

sup

asking a person what they are up to

hey dude sup

sup

whats up asking a person what they are up to

hey dude sup

sup

It's like saying hey but in slang

sup how are you

sup

sup is short for wassup, which is short for what's up, which is short for what is up.
It originated from 2000s teen slang
Sometimes mistaken for "shut up"
it is an interjection, and is used as an informal greeting, such as "what's up?"

sup man
sup. Did you get the ketchup packets?