Antonyms of adj motiveless
1 sense of motiveless
Sense 1
motiveless, unprovoked, wanton -- (occurring without motivation or provocation; "motiveless malignity"; "unprovoked and dastardly attack"- F.D.Roosevelt)
INDIRECT (VIA unmotivated) -> motivated -- (provided with a motive or given incentive for action; "a highly motivated child can learn almost anything"; "a group of politically motivated men")
Similarity of adj motiveless
1 sense of motiveless
Sense 1
motiveless, unprovoked, wanton -- (occurring without motivation or provocation; "motiveless malignity"; "unprovoked and dastardly attack"- F.D.Roosevelt)
=> unmotivated (vs. motivated) -- (without motivation)