544 entries under adjective topic. ×

3
indulgent(calm, kind, soft, gentle)
3
irenic(calm, quiet, friendly, mild)
3
kind(calm, quiet, cool, smooth)
3
kindly(calm, kind, moderate, gentle)
3
laid back(verb, expression, phrasal verb, feature)
3
lifeless(calm, quiet, smooth, silent)
3
low(calm, quiet, moderate, gentle)
3
manageable(calm, quiet, light, simple)
3
merciful(calm, kind, smooth, soft)
3
nerveless(calm, cool, steady, unaffected)
3
permissive(feature, state, calm, informal)
3
pleasing(calm, quiet, moderate, gentle)
3
rational(reasonable, sensible, restrained, modest)
3
satisfied(feature, state, calm, quiet)
3
secure(calm, quiet, light, smooth)
3
self-contained
3
slow(calm, quiet, light, cool)
3
soundless(calm, quiet, smooth, silent)
3
tender(calm, quiet, kind, smooth)
3
thoughtless(feature, state, trait)
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APASmart Define. (2016). tranquil thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/tranquil/thesaurus/synonyms
ChicagoSmart Define. 2016. "tranquil thesaurus" https://smartdefine.org/tranquil/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, tranquil thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/tranquil/thesaurus/synonyms>.
MLASmart Define. "tranquil thesaurus" 3 March 2016. Web. 24 September 2026. <https://smartdefine.org/tranquil/thesaurus/synonyms>