[1] : The Collaborative International Dictionary of English v.0.48

expressionless \expres"sionless\, a.
   destitute of expression.
   1913 webster

[2] : WordNet (r) 2.0

expressionless
     adj : deliberately impassive in manner; "deadpan humor"; "his face
           remained expressionless as the verdict was read" syn:
           deadpan, impassive, poker-faced, unexpressive
see also:
deadpan impassive poker-faced unexpressive 

[3] : Moby Thesaurus II by Grady Ward, 1.0

59 moby thesaurus words for "expressionless":
   olympian, aloof, backward, bashful, blank, chilled, chilly, cold,
   constrained, cool, dead, deadpan, detached, discreet, distant,
   dull, empty, fishy, forbidding, frigid, frosty, glassy, guarded,
   icy, impassive, impersonal, inaccessible, inexpressive,
   inscrutable, introverted, lackluster, lusterless, modest, offish,
   poker-faced, remote, removed, repressed, reserved, restrained,
   reticent, retiring, shrinking, standoff, standoffish, stolid,
   subdued, suppressed, unaffable, unapproachable, uncongenial,
   undemonstrative, unexpansive, unexpressive, ungenial, vacant,
   vacuous, withdrawn, wooden

Expressionless >> E Words
Expressionless, definition of term: Expressionless
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