loony tunes
insane in the membrane
not right in the head
meshuggener
gobaloon
off one's onion
nutzoid
gone fishing
off the beam
off one's rocker
hatstand
crackers
bughouse
nutso
off one's chump
out of one's mind
off one's head
not wise
lunatical
demented
reality challenged
becrazed
cuckoo for Cocoa Puffs
deranged
loony
insano
potty
off the rails
crazy as a cootie
crazy as a cootie bug
stark raving mad
jimjam
cracked as an egg
daft
funny in the head
lose one's mind
insaniac
nutballs
mooner
go potty
gelt
insanity
gaga
bananas
bammy
wiggy
cray-cray
buggish
banoodles
loco
crazypants
cray
loced out
jiggy
crazed
half-crazed
up the wall
madman
lunatic
maniac
cracky
screwy
nuts
loopy
bananapants
nerts
mentalist
mad as a box of frogs
barking mad
go mad
half-cracked
psycho
cooked
stark staring mad
meshugge
lima bean
bugnuts
phrenesis
off one's dot
three stops short of Dagenham
toppy
distraught
crazily
insanely
crazy-ass
hysterically
madly
dementedly
nut-bar
crazy as a shithouse rat
bats
mad as a March hare
Ophelian
nutcase
nutsy
loony tunes
insane in the membrane
not right in the head
meshuggener
gobaloon
nutzoid
gone fishing
hatstand
crackers
bughouse
nutso
out of one's mind
not wise
lunatical
demented
reality challenged
becrazed
cuckoo for Cocoa Puffs
deranged
loony
insano
potty
crazy as a cootie
crazy as a cootie bug
stark raving mad
jimjam
cracked as an egg
daft
funny in the head
insaniac
nutballs
gaga
bananas
bammy
wiggy
cray-cray
buggish
banoodles
loco
crazypants
cray
loced out
jiggy
crazed
half-crazed
cracky
screwy
nuts
loopy
bananapants
nerts
mad as a box of frogs
barking mad
half-cracked
psycho
cooked
stark staring mad
meshugge
bugnuts
three stops short of Dagenham
toppy
distraught
crazy-ass
nut-bar
crazy as a shithouse rat
bats
mad as a March hare
Ophelian
nutsy
crazily
insanely
hysterically
madly
dementedly
mooner
gelt
insanity
madman
lunatic
maniac
insano
mentalist
lima bean
phrenesis
nutcase
lose one's mind
go potty
loco
go mad
English words for 'insane; crazy'
As you may have noticed, above you will find words for "insane; crazy". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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