crackbrain

crack·brain

noun \-ˌbrān\

Definition of CRACKBRAIN

: an erratic person : crackpot

— crack·brained \-ˈbrānd\ adjective

Examples of CRACKBRAIN

1. <once a brilliant dancer, he died a crackbrain in a mental institution>
2. <a crackbrain who wore bedroom slippers to the grocery shop>

First Known Use of CRACKBRAIN

circa 1570

Related to CRACKBRAIN

Synonyms: bug, lunatic, crazy, fool, fruitcake, head case, loon, loony, maniac, nut, nutcase, nutter [British slang], psycho, psychopath, sickie, sicko, wacko (also whacko)

Related Words: madman, madwoman; abnormal, deviant; manic-depressive, monomaniac, mythomaniac, neurotic, obsessive, obsessive-compulsive, paranoid, psychoneurotic, psychotic, schizo, schizoid, schizophrene, schizophrenic, sociopath; character, codger, crack, crackpot, crank, eccentric, fantastic (also fantastical), flake, kook, oddball, oddity, original, quiz, screwball, tyke (also tike) [chiefly British], weirdo, zany; case, patient

Near Antonyms: conformer, conformist, follower, sheep

see all synonyms and antonyms

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