noetic
intellectualism
idiot
noesis
imbecile
retard
cretin
half-wit
moron
changeling
pan
subnormality
subnormal
nethermind
room-temperature IQ
simple-mindedness
not the sharpest tool in the shed
not the sharpest tool in the box
vacancy
profundity
not the sharpest knife in the drawer
theory of mind
intellection
brainhood
automaticity
fathom
brain
mental age
mental defectiveness
genia
sophomania
enough sense to pound sand into a rathole
brainpower
shallowness
ideolatry
abnormality
unintelligence
fool
mental retardation
retardation
slowness
superconscious
cerebricity
depth
capacity
backwardness
nonintelligence