Dumbshit

Interjection

1. (pejorative): To be characterized as being stupid or with low intellect.

Full definition of dumbshit

Noun

1. (vulgar, pejorative, colloquial) A stupid person or someone who makes or has just made a significant mistake.
• 1968, Faith Sale, New writing: the Book-of-the-Month Club--College English Association award, "You wanna be a dumbshit, I don't care."

Adjective

1. (vulgar, pejorative, colloquial) (of a person) Stupid, or prone to making mistakes
• 1962, Isaac Asimov (editor), The Hugo winners: volumes 1-2, "If you know me, perhaps you can tell me why I'm calling you?" "Would I be dumbshit enough to tell you? ...