undemonstrative

from WordNet (r) 3.0 (2006)

undemonstrative
    adj 1: not given to open expression of emotion [ant:
           {demonstrative}]

from The Collaborative International Dictionary of English v.0.48

Undemonstrative \Undemonstrative\
   See {demonstrative}.

from Moby Thesaurus II by Grady Ward, 1.0

62 Moby Thesaurus words for "undemonstrative":
      Olympian, actual, aloof, aseptic, backward, bashful, blank, chill,
      chilled, chilly, cold, constrained, cool, detached, discreet,
      distant, emotionless, expressionless, forbidding, frigid, frosty,
      glacial, guarded, icy, impassive, impersonal, inaccessible,
      incontestable, incontrovertible, indifferent, indisputable,
      indubitable, introverted, modest, offish, real, remote, removed,
      repressed, reserved, restrained, reticent, retiring, shrinking,
      standoff, standoffish, subdued, suppressed, true, unaffable,
      unapproachable, uncongenial, uncontestable, undeniable,
      unemotional, unequivocal, unexpansive, ungenial, uninterested,
      unquestionable, veridical, withdrawn