cracked as an egg
crazy as a cootie bug
crazy as a cootie
off one's onion
nutzoid
gone fishing
off the beam
off one's rocker
nutso
off one's chump
hatstand
bughouse
crackers
out of one's mind
off one's head
stark raving mad
insane in the membrane
demented
loony tunes
stark staring mad
becrazed
barking mad
jimjam
not right in the head
meshuggener
crazy as a shithouse rat
gobaloon
lunatical
deranged
bananapants
off the rails
potty
lose one's mind
insano
loony
mad as a box of frogs
nutballs
crazy as a bedbug
nuts
gelt
mooner
cuckoo for Cocoa Puffs
go potty
loopy
insaniac
reality challenged
crazy as a soup sandwich
cooked
bananas
crazo
banoodles
buggish
cray
bammy
jiggy
loco
gaga
go mad
wiggy
loced out
crazypants
cray-cray
lunatic
mentalist
nucking futs
crazy-ass
psycho
round the bend
daft
not wise
insanity
looney tunes
batshit
funny in the head
nut-bar
unglued
drive someone crazy
plumb crazy
maniac
madman
doolally
Ophelian
mad as a March hare
mad
up the wall
dementia
cracky
nutcase
fruitloop
toys in the attic
half-crazed
crazed
one brick short of a full load
gobsmacked

English words for 'Utterly crazy or insane.'

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