635 entries under adjective topic. ×

84
peaceful(calm, state, quiet, cool)
80
calm(feature, state, calm, quiet)
78
tranquil(feature, state, calm, quiet)
54
placid(calm, quiet, cool, kind)
46
composed(calm, quiet, light, cool)
43
cool(feature, state, calm, quiet)
40
quiet(feature, state, calm, light)
37
unruffled(calm, quiet, cool, smooth)
32
undisturbed(feature, state, calm, quiet)
26
sedate(calm, quiet, cool, reasonable)
26
untroubled(feature, state, calm, quiet)
25
relaxed(feature, state, calm, quiet)
24
imperturbable(calm, quiet, cool, smooth)
24
comfortable(calm, quiet, light, secure)
23
still(adverb, calm, quiet, cool)
23
collected(calm, quiet, cool, smooth)
23
easygoing(feature, state, calm, quiet)
21
dispassionate(calm, quiet, cool, moderate)
21
pacific(noun, calm, quiet, cool)
21
self-possessed(calm, quiet, cool, moderate)
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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>