60 entries under serene topic. ×

9
agreeable(adjective, calm, quiet, soft, pleasant)
9
neutral(adjective, appeasing, characteristic, calm)
8
temperate(adjective, calm, quiet, smooth, cool)
8
bloodless(adjective, characteristic, calm, quiet)
8
easeful(adjective, calm, quiet, light, smooth)
7
at ease(expression, adjective, state, calm, quiet)
7
meek(adjective, calm, quiet, soft, pleasant)
7
motionless(adjective, smooth, quiet, cool, mild)
7
nonaggressive(adjective, characteristic, quiet, cool, friendly)
7
passive(adjective, quiet, gentle, modest, humble)
7
relaxing(adjective, calm, still, tranquil)
7
tolerant(adjective, feature, state, calm, quiet)
6
pastoral(adjective, calm, quiet, cool, smooth)
6
inactive(adjective, quiet, cool, smooth, mild)
5
tame(adjective, calm, quiet, cool, soft)
5
non-aggressive(adjective, quiet, cool, friendly)
4
patient(adjective, calm, quiet, cool, easy)
4
peace-loving(adjective, calm, quiet, cool, friendly)
3
reasonable(adjective, calm, quiet, easy, relaxed)
3
without hostility(expression, adjective, quiet, cool, friendly)
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APASmart Define. (2016). peaceful thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/peaceful/thesaurus/synonyms
ChicagoSmart Define. 2016. "peaceful thesaurus" https://smartdefine.org/peaceful/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, peaceful thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/peaceful/thesaurus/synonyms>.
MLASmart Define. "peaceful thesaurus" 24 March 2016. Web. 1 October 2026. <https://smartdefine.org/peaceful/thesaurus/synonyms>