stupid (n.)
- absurd
- backward
- block
- boring
- bovine
- brute
- clod
- crazy
- cuckoo
- dense
- dim
- dimwit
- dolt
- donkey
- dope
- dullard
- dumbbell
- dummy
- dunce
- fat
- fool
- goofy
- gross
- humdrum
- idiot
- ignoramus
- imbecile
- irrational
- jerky
- lightweight
- loon
- loony
- lumbering
- mad
- moron
- nincompoop
- ninny
- nitwit
- pinhead
- put
- retarded
- silly
- simple
- simpleton
- slow
- subnormal
- thick
- wet
stupid (adj.)
- absurd
- addled
- apish
- asinine
- backward
- balmy
- barmy
- batty
- beguiled
- besotted
- blear-eyed
- block
- blockheaded
- blockish
- boneheaded
- bootless
- boring
- bovine
- brainless
- brute
- brutish
- buffoonish
- cloddish
- cockamamie
- cockeyed
- crass
- crazy
- credulous
- cretinous
- daft
- dazed
- dense
- dim
- dim-witted
- dizzy
- doltish
- dopey
- doting
- dozy
- dull
- dumb
- dummy
- duncical
- duncish
- empty-headed
- fat
- fatheaded
- fatuous
- flaky
- fond
- foolhardy
- foolish
- frivolous
- fuddled
- futile
- gaga
- goofy
- goosey
- gross
- half-baked
- half-witted
- ho-hum
- humdrum
- idiotic
- ill-advised
- imbecile
- imbecilic
- inane
- inept
- infatuated
- insane
- insipid
- irrational
- irresponsible
- jerky
- kooky
- laughable
- lightweight
- loony
- ludicrous
- lumbering
- lumpish
- mad
- maudlin
- mindless
- monotonous
- moronic
- nonsensical
- nutty
- oafish
- obtuse
- opaque
- prosaic
- put
- retarded
- ridiculous
- risible
- sappy
- scatterbrained
- screwy
- senseless
- sentimental
- silly
- simple
- slow
- slow-witted
- sluggish
- sottish
- stolid
- subnormal
- tedious
- thick
- thickheaded
- thoughtless
- tiresome
- torpid
- unimaginative
- uninspired
- unintelligent
- uninteresting
- vacuous
- vapid
- wacky
- wet
- witless
- wrongheaded
The fool of nature stood with stupid eyes
And gaping mouth, that testified surprise.
Plays round the head, but comes not to the heart.
One self-approving hour whole years outweighs
Of stupid starers and of loud huzzas;
And more true joy Marcellus exil'd feels
Than Caesar with a senate at his heels.
In parts superior what advantage lies?
Tell (for you can) what is it to be wise?
'T is but to know how little can be known;
To see all others' faults, and feel our own.