7
languid(adjective, feature, state, calm, quiet)
7
lenient(adjective, calm, quiet, kind, soft)
7
motionless(adjective, calm, quiet, cool, smooth)
7
nonchalant(adjective, feature, state, calm, quiet)
7
restrained(adjective, calm, quiet, soft, reasonable)
7
stable(adjective, calm, quiet, smooth, soft)
7
unmoved(adjective, calm, quiet, cool, restrained)
6
at peace(expression, adjective, idiom, calm, quiet)
6
fair(adjective, calm, clear, reasonable, bright)
6
idyllic(adjective, peaceful)
6
inert(adjective, calm, quiet, smooth, silent)
6
passive
6
patient(adjective, calm, quiet, cool, kind)
6
pleasant(adjective, calm, quiet, clear, light)
6
poised(adjective, calm, quiet, cool, mild)
6
reasonable(adjective, calm, quiet, soft, gentle)
6
resting(adjective, calm, peaceful, motionless)
6
silent(adjective, calm, quiet, smooth, gentle)
6
unhurried(adjective, feature, state, calm, quiet)
6
unmoving(adjective, silent, motionless, immobile)
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APASmart Define. (2016). tranquil thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/tranquil/thesaurus/synonyms
ChicagoSmart Define. 2016. "tranquil thesaurus" https://smartdefine.org/tranquil/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, tranquil thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/tranquil/thesaurus/synonyms>.
MLASmart Define. "tranquil thesaurus" 3 March 2016. Web. 22 September 2026. <https://smartdefine.org/tranquil/thesaurus/synonyms>