brainsick
adjective
brain·sick ˈbrān-ˌsik 
1
: mentally disordered
Good Lord, what madness rules in brainsick men, / When for so slight and frivolous a cause / Such factious emulations shall arise!
William Shakespeare
William Shakespeare2
: arising from mental disorder
a brainsick frenzy
brainsickly adverb
Synonyms
- balmy
- barmy [chiefly British]
- bats
- batty
- bedlam
- bonkers
- bughouse [slang]
- certifiable
- crackbrained
- cracked
- crackers
- crackpot
- cranky [dialect]
- crazed
- crazy
- cuckoo
- daffy
- daft
- demented
- deranged
- fruity [slang]
- gaga
- haywire
- insane
- kooky
- kookie
- loco [slang]
- loony
- looney
- loony tunes
- looney tunes
- lunatic
- mad
- maniacal
- maniac
- mental
- meshuga
- meshugge
- meshugah
- meshuggah
- moonstruck
- non compos mentis
- nuts
- nutty
- psycho
- psychotic
- scatty [chiefly British]
- screwy
- unbalanced
- unhinged
- unsound
- wacko
- whacko
- wacky
- whacky
- wud [chiefly Scottish]
See all Synonyms & Antonyms 
Example Sentences
today he is regarded as a brainsick genius who produced some of the greatest paintings in the history of art
Recent Examples on the Web Lawgivers have wrestled since biblical times with the issues of whether and when brainsick people are morally responsible for bad acts. Paul Duggan, Washington Post, 4 Sep. 2019
Paul Duggan, Washington Post, 4 Sep. 2019 Word History
First Known Use
before the 12th century, in the meaning defined at sense 1
brainsick
adjective
as in psychotic
having or showing a very abnormal or sick state of mind today he is regarded as a brainsick genius who produced some of the greatest paintings in the history of art Synonyms & Similar Words
Relevance
- psychotic
- lunatic
- mad
- insane
- nuts
- mental
- maniac
- crazy
- gaga
- maniacal
- crazed
- disturbed
- deranged
- demented
- paranoid
- psycho
- unhinged
- bedlam
- bonkers
- cracked
- moonstruck
- loony
- certifiable
- daft
- haywire
- screwy
- irrational
- strange
- cuckoo
- batty
- paranoidal
- bughouse
- barmy
- daffy
- eccentric
- wacky
- wacko
- nutty
- unbalanced
- ballistic
- kooky
- whacky
- foolish
- scatty
- crackpot
- obsessed
- depressed
- loco
- crackbrained
- unsound
- crackers
- looney
- bats
- odd
- around the bend
- kookie
- unreasonable
- whacko
- loony tunes
- cranky
- meshuga
- meshuggah
- delirious
- looney tunes
- fey
- hysterical
- neurotic
- queer
- distraught
- out to lunch
- balmy
- wud
- distracted
- fruity
- schizophrenic
- frantic
- loopy
- aberrant
- schizoid
- hysteric
- sociopathic
- meshugah
- disordered
- delusional
- off
- paranoiac
- tetched
- dotty
- oddball
- touched
- delusionary
- meshugge
- witless
- pixilated
- out of one's mind
- non compos mentis
- berserk
- pixillated
- nuclear
- off one's gourd
- off one's rocker
- obsessive-compulsive
- off one's head
- paranoic
- out of one's head
- monomaniac
- ape
- potty
- senseless
- raving
- monomaniacal
- frenzied
- fixated
- bananas
- teched
- amok
- wigged-out
- amuck
Antonyms & Near Antonyms
- sane
- sound
- reasonable
- balanced
- rational
- sensible
- wise
- clear
- lucid
- compos mentis
- normal
- uncrazy
- judicious
- healthy
- unneurotic
- well-adjusted