batshit
cuckoo for Cocoa Puffs
have a screw loose
off the deep end
bum head
crazo
mad
loony
fucktarded
insane
wackadoodle
loony tune
spaz
poop
dingbat
unbalanced
jimjam
cockamamie
stunod
rocket
arsehead
cracked as an egg
asshead
rabid
knucklehead
nut-bar
inordinate
nutter
nutzoid
shitfucker
cuntfuck
cuntfucker
knob-end
half-wit
shitfuck
cunthead
fucktwat
loon
out of one's box
off one's tree
out of one's gourd
out of one's tree
cock
off one's box
unconscionable
dipshit
lame
knobtwat
baboon
mug
gonk
steamer
shit stain
airhead
shithead
nerk
bozo
lackwit
schmo
lunkheaded
craphead
go batshit
crazy as a soup sandwich
superunbelievable
to distraction
wacko
weeniehead
crumbum
yutz
apeth
mad as a mongoose
hyphy
bucket head
buckethead
batpoop
dementia
ninny
mad as a hatter
irrationalistic
ungodly
batcrap
round the bend
poke
crazy as a pet coon
looney-tunes
ziphead
harebrained
nitwit
diphead
fuckhead
nutso
looney tunes
dingus
mouth breather
neddy
cockbag

English words for 'Extremely irrational or unreasonable, insane, crazy.'

As you may have noticed, above you will find words for "Extremely irrational or unreasonable, insane, crazy.". 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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