(adj) means annoying in a particularly
vulgar and cheeky way. To be rude, insulting, and offensive. It is often used to refer to something intentionally oversized or intentionally offensively
loud. Bragging is considered obnoxious, as is intentionally disregarding a rule. Showing off your disregard for a rule or order. Being blatantly
disrespectful of social norms and those who would enforce them.
I tried to tell
nim to turn down his music so i could
sleep and that obnoxious asshole stared me in the face while he turned it up, i
almost killed him.