Synonyms and related words :
abnormal, absurd, anomalous, apish, asinine, balmy, bananas, barmy, bats, batty, beany, befooled, beguiled, besotted, bonkers, brainless, buffoonish, buggy, bughouse, bugs, cockeyed, crackers, crank, crankish, cranky, crazy, credulous, crotchety, cuckoo, curious, daffy, daft, dazed, deviant, deviative, different, dippy, divergent, dizzy, doting, dotty, dumb, eccentric, erratic, exceptional, fatuitous, fatuous, fey, flaky, flipped, fond, fool, foolheaded, foolish, freaked out, freaked-out, freakish, freaky, fruitcakey, fruity, fuddled, funny, futile, gaga, goofy, gulled, haywire, idiocratic, idiosyncratic, idiotic, imbecile, inane, inept, infatuated, insane, irregular, just plain nuts, kinky, loony, loopy, mad, maggoty, maudlin, moronic, nuts, nutty, odd, oddball, off, off the hinges, off the track, off the wall, out, outlandish, passing strange, peculiar, potty, quaint, queer, quirky, round the bend, sappy, screwball, screwballs, screwy, senseless, sentimental, silly, singular, slaphappy, strange, stupid, thoughtless, twisted, unconventional, unearthly, unnatural, wacky, weird, wet, whimsical, witless, wondrous strange