12
vaporous(adjective, light, impulsive, unpredictable, fickle)
7
gassy(adjective, carbonated)
6
airy(adjective, open, light, impulsive, unpredictable)
6
expansive(impulsive, unpredictable, explosive, evaporating quickly)
5
aeriform(adjective, vaporous, gaseity)
5
steamy(adjective, giving, smoky, vaporous)
5
effervescent(adjective, impulsive, unpredictable, explosive, vaporous)
5
ethereal(adjective, delicate, heavenly, gaseity)
5
gasiform
5
volatile(adjective, impulsive, unpredictable, changeable, explosive)
4
aerial(adjective, gaseity)
4
explosive(impulsive, unpredictable, evaporating quickly)
4
tenuous(adjective, ghostly, unearthly, otherworldly, wraithlike)
3
evaporated
3
gasified
3
invisible(adjective, hidden, unable)
3
miasmic
3
pneumatic(adjective, airy)
3
rarefied
3
reeky
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APASmart Define. (2015). gaseous thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/gaseous/thesaurus/synonyms
ChicagoSmart Define. 2015. "gaseous thesaurus" https://smartdefine.org/gaseous/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, gaseous thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/gaseous/thesaurus/synonyms>.
MLASmart Define. "gaseous thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/gaseous/thesaurus/synonyms>