insane
abnormal
bereft of reason
brainsick
crackbrained
cracked
crazed
crazy
daft
delirious
deluded
deprived of reason
derange
deranged
disoriented
distraught
flighty
frenzied
hallucinated
hysterical
irrational
loco
lunatic
mad
maddened
maniac
manic
mazed
mental
mentally deficient
meshuggah
moon-struck
non compos
non compos mentis
not all there
not right
odd
of unsound mind
off
psycho
queer
reasonless
senseless
sick
stark-mad
stark-staring mad
strange
tetched
bloodthirsty
deaf
delude
frantic
homicidal
intoxicated
maniacal
mindless
misguided
psychopathic
psychotic
sadistic
suicidal
unbalance
cemented
circumvented
consented
contented
dented
discontented
dissented
invented
lamented
misrepresented
overrepresented
prevented
reinvented
relented
rented
repented
represented
scented
segmented
underrepresented
unrepresented
vented