S.U
SU (said 'S-U', not 'sue')stands for socially unacceptable. It is mainly used as an interjection or adjective to describe things that are socially unacceptable, weird, bizarre, or simply inappropriate in a give situation.
Synonyms for S.U.
On this page, you will find 30 slang terms related to S.U. Some of the top words include: nannother, raunchy, sike, not zesty, retorical, and 25 more.