140 entries under relaxed topic. ×

1
low-pressure(mild, tolerant, laid-back, permissive)
1
outgiving(adjective, calm, mild, casual)
1
prosperous(adjective, calm, quiet, light, smooth)
1
quieted(adjective, calm, easygoing, serene)
1
running(adjective, calm, quiet, light, smooth)
1
soothed(adjective, calm, easygoing, serene)
1
spontaneous(adjective, calm, quiet, light, smooth)
1
substantial(adjective, calm, quiet, light, smooth)
1
suppressed(adjective, calm, easygoing, serene)
1
sure of oneself(expression, adjective, idiom, calm)
1
thriving(adjective, calm, quiet, light, smooth)
1
uncritical(adjective, calm, mild, casual)
1
unexacting(adjective, calm, quiet, light, smooth)
1
uninhibited(adjective, calm, mild, casual)
1
well-to-do(adjective, calm, quiet, light, smooth)
0
biddable(adjective, calm, moderate, tender, informal)
0
informal(mild, tolerant, laid-back, permissive)
0
offhand(mild, tolerant, laid-back, permissive)
0
sympathetic(adjective, calm, kind, moderate, gentle)
0
unanxious(adjective, calm, informal, shy)
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APASmart Define. (2016). tranquil thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/tranquil/thesaurus/synonyms
ChicagoSmart Define. 2016. "tranquil thesaurus" https://smartdefine.org/tranquil/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, tranquil thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/tranquil/thesaurus/synonyms>.
MLASmart Define. "tranquil thesaurus" 3 March 2016. Web. 27 September 2026. <https://smartdefine.org/tranquil/thesaurus/synonyms>