luny

fool, natural, bug, dolt, sucker, goosey, hick, sot, goosy, simpleton, schnook, gosling, tomfool, loggerhead, loony, luny, noodle, mooncalf, nincompoop, ninny, sawney

mad, nuts, moony, insane, demented, lunatic, crazy, gaga, natural, batty, nut, frenetic, phrenetic, fanatic, fanatical, cuckoo, fey, hare-brained, loony, luny, mad-brained, manic, mooney, moonstruck, nutty