weak-minded
feeblemindedness
anoia
mentally deficient person
frail
clouded
touched in the head
psychically
ill-equipped
sick
simple-minded
amential
unhinged
unclouded
fossilise
fossilize
inability
genius
twisted
potato
brilliance
window licker
chemically imbalanced
debility
amentia
able-minded
gaga
acognitive
laborious
lumpish
lumpen
dysgnosia
silly
unthinking
disorder
cabbage
impaired
deficient
mental abnormality
afflicted
ill
spazzer
unhealthy
unsound
mentally ill
unstable
not wrapped too tight
handicapped person
insensible
decompensation
wanting
brain-bending
simple-mindedness
one's elevator doesn't go all the way to the top
brainpower
cream puff
deficit
idiot-savant
psychotic depression
learning ability
wit
confusion
brain
mentality
mental capacity
neurocompetence
stricken
short
disablement
out of one's mind
in one's head
impairment
insane
unsoundness
off one's head
disability
handicap
aberration
faint
well-balanced
nonmentalistic
subaudi
maladjustment
-phrenia
swooning
vacuitous
lightheaded
light
chemical imbalance
light-headed
hypomentalizing
inept
flat
disturbance
oligophrenia
mental illness
weak-minded
frail
clouded
touched in the head
ill-equipped
sick
simple-minded
amential
unhinged
unclouded
twisted
chemically imbalanced
able-minded
gaga
acognitive
laborious
lumpish
lumpen
silly
unthinking
impaired
afflicted
ill
unhealthy
unsound
mentally ill
unstable
insensible
wanting
brain-bending
stricken
out of one's mind
insane
faint
well-balanced
nonmentalistic
subaudi
swooning
vacuitous
lightheaded
light
light-headed
inept
flat
psychically
feeblemindedness
anoia
mentally deficient person
inability
genius
potato
brilliance
window licker
debility
amentia
dysgnosia
disorder
cabbage
deficient
mental abnormality
spazzer
handicapped person
decompensation
simple-mindedness
brainpower
cream puff
deficit
idiot-savant
psychotic depression
learning ability
wit
confusion
brain
mentality
mental capacity
neurocompetence
disablement
impairment
unsoundness
disability
handicap
aberration
maladjustment
chemical imbalance
hypomentalizing
disturbance
oligophrenia
mental illness
fossilise
fossilize
English words for 'mentally deficient'
As you may have noticed, above you will find words for "mentally deficient". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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