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

impassive \impas"sive\, a.
   not susceptible of pain or suffering; apathetic; impassible;
   unmoved.
   1913 webster

         impassive as the marble in the quarry.   --de quincey.
   1913 webster

         on the impassive ice the lightings play. --pope.
   -- impas"sively, adv. -- impas"siveness, n.
   1913 webster
see also:
impas"sively impas"siveness 

[2] : WordNet (r) 2.0

impassively
     adv : in an impassive manner; "he submitted impassively to his
           arrest"

Impassively >> I Words
Impassively, definition of term: Impassively
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