635 entries under adjective topic. ×

4
cheerful(verb, feature, state, calm)
4
contented(feature, state, calm, quiet)
4
bucolic(calm, quiet, cool, smooth)
4
cold-blooded(calm, cool, detached, blank)
4
coolheaded(calm, quiet, relaxed, casual)
4
deliberate(calm, quiet, cool, relaxed)
4
demure(calm, quiet, cool, gentle)
4
dignified(calm, cool)
4
easeful(calm, quiet, light, smooth)
4
friendly(calm, quiet, peaceful, easygoing)
4
grave(calm, quiet, cool, reasonable)
4
hushed(calm, quiet, cool, smooth)
4
inert(calm, quiet, smooth, tranquil)
4
laid back(verb, expression, phrasal verb, feature)
4
lenient(calm, quiet, kind, soft)
4
merciful(calm, kind, soft, moderate)
4
neutral(calm, quiet, cool, smooth)
4
noiseless(calm, quiet, smooth, tranquil)
4
reconciled(verb, calm, peaceful, tranquil)
4
self-contained(close, quiet, cool, gentle)
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APASmart Define. (2015). serene thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/serene/thesaurus/synonyms
ChicagoSmart Define. 2015. "serene thesaurus" https://smartdefine.org/serene/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, serene thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/serene/thesaurus/synonyms>.
MLASmart Define. "serene thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/serene/thesaurus/synonyms>