dumbass

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a stupid person;
these words are used to express a low opinion of someone's intelligence
• Syn:
dunce, dunderhead, numskull, blockhead, bonehead,
bonehead, hammerhead, knucklehead, loggerhead, muttonhead,
shithead, fuckhead
• Hypernyms:
stupid, stupid person, stupe, dullard, dolt,
pudding head, pudden-head, poor fish, pillock