"Sus" is a slang term that is
short for "suspicious." It is used to describe someone or something that appears to be
shady or untrustworthy. It can also be used as a verb, "to sus," meaning to suspect or to have a feeling of mistrust towards someone or something. It is common to use the phrase on the
internet or in text conversations.
Joe: Hey
Bob, have you seen the new guy at work yet?
Bob: Yeah, I saw him yesterday.
Joe: What do you think of him?
Bob: I don't know man, something about him just seems sus to me.
Joe: Sus?
Bob: Yeah, like he'
s hiding something. I can't put my finger on it, but my gut tells me to be careful around him.
Joe: Hmm, that is sus. I'll keep an eye on him. Thanks for the heads up.