Mad as a hatter

Synonyms for mad as a hatter
adj mentally strange

insane
nuts
wacky
kooky
nutty
silly
mad
screwball
lunatic
cuckoo
psycho
berserk
ape

barmy
batty
bonkers
cracked
crazed
daft
delirious
demented
deranged
dingy
dippy
erratic
flaky

fruity
idiotic
maniacal
mental
moonstruck
screwy
touched
unbalanced
unhinged
potty
bats in the belfry
flipped
flipped out

freaked out
mad as a March hare
nutty as fruitcake
of unsound mind
out to lunch
round the bend
schizo
screw loose
unglued
unzipped
out of one’s mind
out of one’s tree

Antonyms for mad as a hatter

rational
sane
collected
sensible
balanced

reasonable
sound
calm
realistic
responsible

smart
believeable
dislike
hate

Synonyms
adj insane

crazy
lunatic
cuckoo
maniac
nuts
sick
psycho
crackers
bonkers

brainsick
daft
demented
deranged
distraught
disturbed
dotty
kooky
loco

mad
maniacal
mentally ill
moonstruck
touched
unbalanced
unhinged
unsound
wacky

crazy as a loon
not all there
nutty as a fruitcake
out to lunch
sick in the head
stark raving mad
off one’s rocker
out of one’s mind

Antonyms

sane

sensible

healthy

Synonyms
adj insane

batty
bonkers
cracked
crackers
crazed
crazy
daft
demented

disordered
distraught
dotty
lunatic
mad
maniac
maniacal
mentally ill

moonstruck
nuts
nutty
psychotic
touched
unbalanced
unhinged
unsound

not all there
sick in the head
stark raving mad
off one’s rocker
out of one’s mind

Synonyms
adj insane

nutty
bananas
batty
bonkers
buggy
crackers
crazed
crazy
cuckoo

daft
demented
disordered
dotty
eccentric
kooky
loco
loony
lunatic

mad
mentally ill
moonstruck
nuts
off
touched
unbalanced
unsound
wacky

crazy as a loon
not all there
nutty as a fruitcake
of unsound mind
stark raving mad
off one’s rocker
out of one’s mind

Synonyms
adj insane

batty
bizarre
brainsick
cracked
crazed
cuckoo
daft
demented
deranged
disordered
distraught
dotty
fatuous
frenzied
idiotic

impractical
irrational
irresponsible
loony
lunatic
maniac
maniacal
mentally ill
moonstruck
nuts
nutty
paranoid
preposterous
psychopathic
psychotic

rabid
raging
raving
screwy
senseless
unhinged
unsound
around the bend
crazy
crazy as a loon
derailed
mad
mental
not all there
nutty as a fruitcake

of unsound mind
off
schizophrenic
sick in the head
stark raving mad
touched
unbalanced
unsettled
wild
wrong
off one’s rocker
out of one’s mind

Synonyms
adj insane

batty
bizarre
brainsick
cracked
crazed
cuckoo
daft
demented
deranged
disordered
distraught
dotty
fatuous
frenzied

idiotic
impractical
irrational
irresponsible
loony
lunatic
maniac
maniacal
mentally ill
nuts
nutty
paranoid
preposterous
psychopathic

psychotic
rabid
raging
raving
screwy
senseless
unhinged
unsound
around the bend
crazy
crazy as a loon
derailed
mad
mental

not all there
nutty as a fruitcake
of unsound mind
off
schizophrenic
sick in the head
stark raving mad
touched
unbalanced
unsettled
wild
wrong
off one’s rocker
out of one’s mind

Usage Notes

Mad meaning “enraged, angry” has been used since 1300, and this sense is a very common one. Because some teachers and usage critics insist that the only correct meaning of mad is “mentally disturbed, insane,” mad is often replaced by angry in formal contexts: The president is angry at Congress for overriding his veto.