Antonyms of adj unmotivated

1 sense of unmotivated

Sense 1
unmotivated (vs. motivated) -- (without motivation)

motivated (vs. unmotivated) -- (provided with a motive or given incentive for action; "a highly motivated child can learn almost anything"; "a group of politically motivated men")
        => actuated -- (moved to action; "a man actuated by unworthy desired")
        => driven, impelled -- (urged or forced to action through moral pressure; "felt impelled to take a stand against the issue")

Similarity of adj unmotivated

1 sense of unmotivated

Sense 1
unmotivated (vs. motivated) -- (without motivation)
       => causeless, reasonless -- (having no justifying cause or reason; "a senseless, causeless murder"; "a causeless war that never had an aim"; "an apparently arbitrary and reasonless change")
       => motiveless, unprovoked, wanton -- (occurring without motivation or provocation; "motiveless malignity"; "unprovoked and dastardly attack"- F.D.Roosevelt)
          Also See-> unintended#1