Dimwit

Noun

 * 1)  A person who is deficient in intelligence.

Synonyms

 * See Thesaurus:fool

Derived terms

 * dimwitted


 * dimwittedly


 * dimwittedness

Thesaurus
Boeotian, block, clod, cluck, dolt, donkey, dope, dullard, dumb, dumb cluck, dumbbell, dummy, dunce, gowk, jobbernowl, lackwit, lamebrain, lightweight, looby, loon, niais, nincompoop, ninny, ninnyhammer, nitwit, noddy, put, stupid, thickwit, witling

Etymology
From dim + wit