Thesaurus
crackbrained
Synonyms and Antonyms of crackbrained
- had the crackbrained idea that he was receiving radio signals from outer space
balmy, barmy [chiefly British], bats, batty, bedlam, bonkers, brainsick, bughouse [slang], certifiable, cracked, crackers, crackpot, cranky [dialect], crazed, crazy, cuckoo, daffy, daft, demented, deranged, fruity [slang], gaga, haywire, insane, kooky (also kookie), loco [slang], loony (also looney), loony tunes (or looney tunes), lunatic, mad, maniacal (also maniac), mental, meshuga (or meshugge), moonstruck, non compos mentis, nuts, nutty, psycho, psychotic, scatty [chiefly British], screwy, unbalanced, unhinged, unsound, wacko (also whacko), wacky (also whacky), wud [chiefly Scottish]
dotty, fey, loopy, off, potty [chiefly British], teched (or tetched), touched
aberrant, delirious, delusional, delusionary, disordered, disturbed, neurotic, obsessive-compulsive, paranoiac (also paranoic), paranoid (also paranoidal), schizoid, schizophrenic, sociopathic
eccentric, odd, oddball, pixilated (also pixillated), queer, strange
amok (or amuck), ape, ballistic, bananas, berserk, nuclear
distracted, distraught, frantic, frenzied, haywire, hysterical (also hysteric), raving, wigged-out
around the bend, off one's gourd, off one's head, off one's rocker, out of one's head (or mind), out to lunch [slang]
Seen and Heard
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