emotionless

from WordNet (r) 3.0 (2006)

emotionless
    adj 1: unmoved by feeling; "he kept his emotionless objectivity
           and faith in the cause he served"; "this passionless girl
           was like an icicle in the sunshine"-Margaret Deland [syn:
           {emotionless}, {passionless}]

from The Collaborative International Dictionary of English v.0.48

emotionless \e*mo"tion*less\ adj.
   1. unsusceptible to, destitute of, or showing no emotion;
      unmoved by feeling. Opposite of {emotional}; as, he kept
      his emotionless objectivity and faith in the cause he
      served. [Narrower terms: {matter-of-fact, prosaic};
      {philosophical, philosophic}; {phlegmatic, phlegmatical,
      stolid}; {stoic, stoical}; {unblinking}] Also See: {cool},
      {passionless}, {unmoved}(predicate), {unmoving}.

   Syn: unemotional, passionless.
        [WordNet 1.5]

from Moby Thesaurus II by Grady Ward, 1.0

22 Moby Thesaurus words for "emotionless":
      chill, cold, cold-blooded, cool, dispassionate, distant, frigid,
      glacial, heartless, icy, immovable, impassive, impersonal,
      indifferent, matter-of-fact, nonemotional, remote, reserved,
      undemonstrative, unemotional, unfeeling, unimpassioned