jimjam
go potty
lose one's mind
cuckoo for Cocoa Puffs
insane in the membrane
loony tunes
crazo
cracked as an egg
psycho
toys in the attic
nutballs
off the beam
insanity
off one's onion
nutzoid
off one's rocker
gone fishing
craziness
mad
off one's box
out of one's gourd
off one's tree
out of one's tree
out of one's box
lunatical
not right in the head
meshuggener
lunatically
half-cracked
nutso
cuckoo
cooked
reality challenged
have a screw loose
round the bend
fruitloop
nut job
insaniac
bananas
bananapants
crazy as a pet coon
loon
loco
mad as a mongoose
mad as a hatter
go mad
apartments to let
becraze
5150
tonto
nerts
gobaloon
becrazed
gelt
demented
bughouse
mooner
hatstand
dementia
off one's chump
crackers
nutcase
nut-bar
funny in the head
get one's freak on
stunod
rocket
loopy
bugnuts
wild-ass
daft
crazen
screwy
loony
off one's head
drive someone crazy
meshugge
out of one's mind
maniacal
doolally
mental case
not have both oars in the water
looney tunes
batshit
insane
insaneness
crazy as a cootie
crazy as a cootie bug
flooey
Ophelian
off-minded
jimjam
cuckoo for Cocoa Puffs
insane in the membrane
loony tunes
cracked as an egg
psycho
nutballs
nutzoid
gone fishing
mad
lunatical
not right in the head
meshuggener
half-cracked
cuckoo
cooked
reality challenged
insaniac
bananas
bananapants
crazy as a pet coon
mad as a mongoose
mad as a hatter
5150
tonto
nerts
gobaloon
becrazed
nutso
demented
bughouse
hatstand
crackers
funny in the head
loopy
bugnuts
wild-ass
daft
screwy
meshugge
out of one's mind
maniacal
stunod
doolally
looney tunes
batshit
insane
crazy as a cootie
crazy as a cootie bug
flooey
Ophelian
off-minded
lunatically
crazo
toys in the attic
insanity
craziness
nutso
fruitloop
nut job
nutzoid
meshuggener
loon
apartments to let
insaniac
gelt
mooner
dementia
nutcase
nut-bar
stunod
rocket
loony
mental case
insaneness
psycho
batshit
go potty
lose one's mind
have a screw loose
loco
go mad
becraze
get one's freak on
crazen
drive someone crazy
not have both oars in the water
English words for 'Crazy; insane or befuddled.'
As you may have noticed, above you will find words for "Crazy; insane or befuddled.". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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puppet operator
right holder
cogito, ergo sum
adjudication
override
to immobilize
static.
that's the way it is
one morning
a steward.
personalization
quick-eared
The result of such a process
fiber optics
empty house
botany
angled
Not being used
tropical.
to have faith in
east player
how ...!
Certain
dressy
cowardice.
whatsoever.
To struggle
to be particular about
incontrovertible
written language
control panel
sensible.
to start.
bass guitar
excited.
in brief
adept
inquirer
asymmetry
wonder drug
front and back
homesickness
voluble
vilification
liar
polite
denial
to stain
manners
with a snap