cognosce
flip one's wig
mattoid
psycho
craze
incompetent
derange
wet end
cray-dar
stultify
automaniac
attention whore
screw loose
fossilize
fossilise
loon
space case
crack up
have a screw loose
head game
autopsychically
détraqué
nutburger
jackaninny
muppet
gaslight
full deckism
clown shoe
slut
wig out
sad sack
mindfucker
few cards shy of a full deck
cockbag
mad person
Homer Simpson
hillbilly
psyche
fuckhead
insane
come unhinged
abnormal psychology
spack
headcase
arsehead
lolcow
bungler
spacky
asshead
defective
profane
dingus
vesania
one's elevator doesn't go all the way to the top
pit one's wits
gimboid
lunatize
wackadoodle
psychostatically
bushwhacker
lose one's marbles
distraction
impulsivist
fruitloop
mindfuck
maddening
cuntfuck
idiotic
mess up
fucktwat
cunthead
cuntfucker
shitfucker
misfit
shitfuck
attention seeker
scum
dipshit
seducer
delusionist
crackpot
lame
psychoanalyser
delusionality
impulsive
trick
nutter
drive someone crazy
delusively
live one
head-game
zombify
manic
cuntbag
Alice in Wonderland
aberration
dichocephalic

English words for 'To determine a person to be insane or mentally incompetent.'

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