unventilated

from WordNet (r) 3.0 (2006)

unventilated
    adj 1: not ventilated; "stuffy unventilated rooms" [ant:
           {ventilated}]

from The Collaborative International Dictionary of English v.0.48

Unventilated \Unventilated\
   See {ventilated}.

from Moby Thesaurus II by Grady Ward, 1.0

27 Moby Thesaurus words for "unventilated":
      airless, blank, blind, blind-alley, breathless, breezeless, cecal,
      choked, choked off, close, closed, constricted, contracted, dead,
      dead-end, ill-ventilated, oppressive, shut, squeezed shut,
      stifling, strangulated, stuffy, suffocating, unopen, unopened,
      unvented, windless