Antonyms of adj unintelligent

1 sense of unintelligent

Sense 1
unintelligent (vs. intelligent), stupid -- (lacking intelligence; "a dull job with lazy and unintelligent co-workers")

intelligent (vs. unintelligent) -- (having the capacity for thought and reason especially to a high degree; "is there intelligent life in the universe?"; "an intelligent question")
        => agile, nimble -- (mentally quick; "an agile mind"; "nimble wits")
        => apt, clever -- (mentally quick and resourceful; "an apt pupil"; "you are a clever man...you reason well and your wit is bold"-Bram Stoker)
        => brainy, brilliant, smart as a whip -- (having or marked by unusual and impressive intelligence; "some men dislike brainy women"; "a brilliant mind"; "a brilliant solution to the problem")
        => bright, smart -- (characterized by quickness and ease in learning; "some children are brighter in one subject than another"; "smart children talk earlier than the average")
        => natural, born (predicate), innate (predicate) -- (being talented through inherited qualities; "a natural leader"; "a born musician"; "an innate talent")
        => quick, ready -- (apprehending and responding with speed and sensitivity; "a quick mind"; "a ready wit")
        => prehensile -- (having a keen intellect; "poets--those gifted strangely prehensile men"- A.T.Quiller-Couch)
        => scintillating -- (brilliantly clever; "scintillating wit"; "a play full of scintillating dialogue")
        => searching, trenchant -- (having keenness and forcefulness and penetration in thought, expression, or intellect; "searching insights"; "trenchant criticism")

Similarity of adj unintelligent

1 sense of unintelligent

Sense 1
unintelligent (vs. intelligent), stupid -- (lacking intelligence; "a dull job with lazy and unintelligent co-workers")
       => brainless, headless -- (not using intelligence)
          Also See-> retarded#1; stupid#1