motiveless

from WordNet (r) 3.0 (2006)

motiveless
    adj 1: occurring without motivation or provocation; "motiveless
           malignity"; "unprovoked and dastardly attack"-
           F.D.Roosevelt [syn: {motiveless}, {unprovoked}, {wanton}]

from The Collaborative International Dictionary of English v.0.48

Motiveless \Mo"tive*less\, a.
   Destitute of a motive; not incited by a motive. --
   {Mo"tive*less*ness}, n. --G. Eliot.
   [1913 Webster]

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