have a screw loose
have bats in one's belfry
wackadoodle
batshit
nutburger
flip one's wig
cuckoo for Cocoa Puffs
nutter
crazo
off the deep end
jimjam
loony
lose one's mind
balmy
loon
derange
wacko
dingbat
screw loose
cooked
doolally
space case
stunod
rocket
insane
mad hatter
asshead
arsehead
poke
go potty
fruitloop
irrationalize
nitwit
nutbar
tapped
derationalize
pop one's cork
mad
cockamamie
knucklehead
idiotlike
poop
knob-end
go batshit
nutzoid
maddening
dotty
craze
to distraction
glaik
maniacal
drive someone crazy
kooky
doilem
crazen
half-wit
go moggy
fictive
psycho
go mad
insaniac
dipshit
crackpot
neddy
crack up
bum head
idiosomic
lame
crazyhead
nut-bar
becraze
bozo
whacko
cuntfuck
imbecilic
loco
cunthead
non compos mentis
shitfuck
nutso
baboon
fucktwat
apartments to let
nutty as a fruitcake
cuntfucker
lunkheaded
idiotize
shitfucker
fleabrain
mutt
loony tune
off one's box
wanker

English words for 'To be insane, irrational, or eccentric.'

As you may have noticed, above you will find words for "To be insane, irrational, or eccentric.". Hover the mouse over the word you'd like to know more about to view its definition. Click search related words by phrase or description. to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.

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