aberration
absurdity
alienation
amentia
arrested development
asininity
backwardness
battiness
blithering idiocy
brain disease
brainlessness
buffoonery
clownishness
crack-up
crackpottedness
crankiness
craziness
cretinism
daffiness
delirium
delusion
dementia
dementia praecox
derangement
desipience
distraction
dotage
dottiness
eccentricity
emotional disorder
emotional instability
fatuity
fatuousness
folly
foolery
foolheadedness
foolishness
frenzy
frivolity
frivolousness
functional nervous disorder
giddiness
goofiness
half-wittedness
hallucination
mental disease
mental illness
psychopathy
daftness
dementedness
flakiness
insaneness
irrationality
lunacy
madness
mental unsoundness
unbalance
unreason
insane
anarchy
blindness
cowardice
cruelty
depression
desperation
drunkenness
epilepsy
exhaustion
hysteria
idiocy
illness
impotence
panic
paralysis
stupidity
weakness
Christianity
humanity
inhumanity
profanity
sanity
vanity