60 entries under serene topic. ×

96
tranquil(adjective, calm, characteristic, calmness)
84
calm(adjective, characteristic, calmness, tranquillity)
67
placid(adjective, calm, mild, characteristic)
58
quiet(adjective, calm, mild, characteristic)
55
undisturbed(adjective, calm, state, quiet, smooth)
47
still(adjective, calm, quiet, cool)
46
pacific(adjective, calm, quiet, cool, smooth)
39
halcyon(adjective, calm, quiet, smooth, mild)
38
unruffled(adjective, calm, quiet, cool)
37
peaceable(adjective, friendly, peace, state, characteristic)
36
restful(adjective, quiet, calm, smooth)
35
gentle(adjective, mild, temperate, characteristic, calm)
34
cool(adjective, calm, state, quiet, smooth)
34
untroubled(adjective, calm, state, characteristic, quiet)
33
composed(adjective, calm, quiet, characteristic, mild)
20
smooth(adjective, calm, quiet, characteristic, cool)
20
sedate(adjective, calm, characteristic, quiet, state)
17
even(adjective, mild, calm, quiet, gentle)
16
irenic(adjective, peaceable, characteristic, calmness)
15
amicable(adjective, friendly, agreeable, cordial)
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APASmart Define. (2016). peaceful thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/peaceful/thesaurus/synonyms
ChicagoSmart Define. 2016. "peaceful thesaurus" https://smartdefine.org/peaceful/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, peaceful thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/peaceful/thesaurus/synonyms>.
MLASmart Define. "peaceful thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/peaceful/thesaurus/synonyms>