RichThesaurus
screw loose
screw loose
synonyms
screwy
of unsound mind
round the bend
crazy
flipped out
unglued
ape
silly
erratic
screwball
moonstruck
out of one’s mind
flaky
cuckoo
nutty as fruitcake
unbalanced
nutty
potty
lunatic
fruity
freaked out
kooky
out to lunch
batty
wacky
schizo
mental
cracked
idiotic
crazed
berserk
dippy
out of one’s tree
barmy
flipped
touched
demented
dingy
nuts
insane
unhinged
mad
bonkers
maniacal
unzipped
psycho
deranged
delirious
daft
nutso
more synonyms
screw loose
antonyms
sensible
smart
reasonable
realistic
balanced
responsible
sane