84
peaceful(adjective, calm, state, quiet, cool)
80
calm(adjective, feature, state, calm, quiet)
78
tranquil(adjective, feature, state, calm, quiet)
54
placid(adjective, calm, quiet, cool, kind)
46
composed(adjective, calm, quiet, light, cool)
43
cool(adjective, feature, state, calm, quiet)
40
quiet(adjective, feature, state, calm, light)
37
unruffled(adjective, calm, quiet, cool, smooth)
32
undisturbed(adjective, feature, state, calm, quiet)
26
sedate(adjective, calm, quiet, cool, reasonable)
26
untroubled(adjective, feature, state, calm, quiet)
25
relaxed(adjective, feature, state, calm, quiet)
24
imperturbable(adjective, calm, quiet, cool, smooth)
24
comfortable(adjective, calm, quiet, light, secure)
23
still(adjective, adverb, calm, quiet, cool)
23
collected(adjective, calm, quiet, cool, smooth)
23
easygoing(adjective, feature, state, calm, quiet)
21
dispassionate(adjective, calm, quiet, cool, moderate)
21
pacific(noun, adjective, calm, quiet, cool)
21
self-possessed(adjective, calm, quiet, cool, moderate)
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APASmart Define. (2015). Serene thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/serene/thesaurus/synonyms
ChicagoSmart Define. 2015. "Serene thesaurus" https://smartdefine.org/serene/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, Serene thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/serene/thesaurus/synonyms>.
MLASmart Define. "Serene thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/serene/thesaurus/synonyms>