a man who is a stupid incompetent fool

[ Syn: fathead , goofball , bozo , jackass , goose , cuckoo , twat , zany ]

a person who amuses others by ridiculous behavior

[ Syn: clown , buffoon , goofball , merry andrew ]

commit a faux pas or a fault or make a serious mistake; I blundered during the job interview

[ Syn: drop the ball , sin , blunder , boob ]