Definition of brainsick
- Good Lord, what madness rules in brainsick men, / When for so slight and frivolous a cause / Such factious emulations shall arise!
- —William Shakespeare
- a brainsick frenzy
today he is regarded as a brainsick genius who produced some of the greatest paintings in the history of art
before 12th century
balmy, bats, batty, bedlam, bonkers, certifiable, crackbrained, cracked, crackpot, crazed, crazy, cuckoo, daffy, daft, demented, deranged, gaga, insane, kooky (also kookie), loco [slang], loony (also looney), lunatic, mad, maniacal (also maniac), mental, non compos mentis, nuts, nutty, psychotic, screwy, unbalanced, unhinged, unsound, wacky (also whacky);
around the bend, off one's gourd, off one's head, off one's rocker, out of one's head (or mind);
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