Fool
a person of subnormal intelligence
Synonyms
blockhead, bonehead, changeling, chump, clot, dimwit, dolt, donkey, dope, dumbo, dummy, dunce, fall guy, fathead, fat-head, gull, half-wit, Idiot, imbecile, jester, Mark, motley fool, mug, muggins, nincompoop, nitwit, numskull, nut, oaf, patsy, retard, sap, saphead, soft touch, sucker, tom