10
close(adjective, warm, hot, stale, oppressive)
9
airless(adjective, warm, hot, tight, stale)
9
stuffy(adjective, close, warm, hot, tight)
7
breathless(adjective, warm, heavy, hot, tight)
7
stifling(adjective, warm, hot, tight, stale)
6
oppressive(adjective, warm, tight, stale, smelly)
6
suffocating(adjective, warm, heavy, hot, tight)
5
unvented
3
dyspnoeic
3
fuggy
3
fusty(adjective, warm, heavy, tight, stale)
3
musty(adjective, warm, heavy, tight, stale)
3
unaired
2
dyspneal
2
dyspneic
2
heavy(adjective, warm, hot, tight, stale)
2
muggy(adjective, warm, heavy, hot, tight)
2
stale(adjective, warm, tight, oppressive, smelly)
2
tight(adjective, closure)
1
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APASmart Define. (2015). unventilated thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unventilated/thesaurus/synonyms
ChicagoSmart Define. 2015. "unventilated thesaurus" https://smartdefine.org/unventilated/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unventilated thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unventilated/thesaurus/synonyms>.
MLASmart Define. "unventilated thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unventilated/thesaurus/synonyms>