Synonyms and related words :
abnormal, absurd, apish, asinine, batty, bedlamite, befooled, beguiled, bereft of reason, besotted, boneheaded, brainless, brainsick, buffoonish, cockamamie, cockeyed, crackbrained, cracked, crazed, crazy, crazy about, credulous, cretinous, daffy, dazed, deluded, demented, deprived of reason, deranged, dim-witted, disoriented, distraught, dizzy, dopey, doting, dumb, fat-witted, fatuitous, fatuous, flaky, flighty, fond, fool, foolheaded, foolish, fuddled, futile, gaga, giddy, goofy, gulled, hallucinated, idiotic, imbecile, imbecilic, inane, inept, infatuated, infatuated with, insane, irrational, kooky, loco, loony, lunatic, mad, mad about, maddened, manic, maudlin, mazed, mental, mentally deficient, meshuggah, moon-struck, moronic, non compos, non compos mentis, nonsensical, not all there, not right, nuts about, nutty, obtuse, odd, of unsound mind, off, psycho, queer, reasonless, ridiculous, sappy, screwy, senseless, sentimental, sick, silly, slow-witted, stark-mad, stark-staring mad, strange, stupid, sweet on, tetched, thoughtless, touched, unbalanced, unhinged, unsane, unsettled, unsound, wacky, wandering, weak-minded, wet, witless,