[n] a person who amuses others by ridiculous behavior [n] a rude or vulgar fool [v] act as or like a clown
antic, buffoon, clown around, merry andrew
acrobat, aerialist, apple knocker, arriviste, ass, Babbitt, banana, bareback rider, be foolish, be stupid, blockhead, blunderer, blunderhead, boor, born fool, botcher, bounder, bourgeois, bucolic, buffo, buffoon, bumbler, bumpkin, bungler, burlesquer, cad