10
even(adjective, adverb, calm, quiet, soft)
10
limpid(verb, adjective, calm, clear, peaceful)
10
moderate(adjective, calm, quiet, light, cool)
10
peaceable(adjective, calm, quiet, kind, smooth)
10
pellucid(verb, adjective, calm, clear, peaceful)
10
steady(adjective, calm, quiet, cool, smooth)
10
temperate(adjective, calm, quiet, light, cool)
10
unexcitable(adjective, calm, quiet, cool, smooth)
10
unworried(adjective, feature, state, calm, quiet)
9
detached(adjective, calm, quiet, cool, moderate)
9
insouciant(adjective, feature, state, calm, cool)
9
level-headed(adjective, calm, cool, smooth, steady)
9
orderly(adjective, calm, quiet, smooth, gentle)
9
phlegmatic(adjective, calm, quiet, cool, relaxed)
9
satisfied(adjective, feature, state, calm, quiet)
9
translucent(verb, calm, clear)
9
unagitated(adjective, calm, quiet, relaxed, restrained)
8
casual(adjective, feature, state, calm, cool)
8
clear(adjective, calm, peaceful, tranquil, undisturbed)
8
content(verb, adjective, calm, quiet, light)
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APASmart Define. (2015). serene thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/serene/thesaurus/synonyms
ChicagoSmart Define. 2015. "serene thesaurus" https://smartdefine.org/serene/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, serene thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/serene/thesaurus/synonyms>.
MLASmart Define. "serene thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/serene/thesaurus/synonyms>