shade

a slang term that's basically a term for insult. Throwing shade is usually a response to tea. if someone maybe flirted with your bf while knowing that you're together, that would be a shady move. It is an adjective or a noun.

Person: Person 2 in class shot me a shady look. Do you know why they're mad?

Person 3: Did you hear person's response to that tweet?

Person 4: Was she throwing shade?