87 entries under feature topic. ×

4
happy-go-lucky(adjective, state, mild, relaxed)
4
indifferent(adjective, state, reasonable, sensible)
4
insouciant(adjective, state, mild, relaxed)
4
laid-back(adjective, state, calm, quiet)
4
light(adjective, state, calm, quiet)
4
undemanding(adjective, state, calm, quiet)
4
unworried(adjective, state, calm, quiet)
3
devil-may-care(adjective, state, calm, mild)
3
laid back(verb, expression, adjective, phrasal verb)
3
permissive(adjective, state, calm, informal)
3
satisfied(adjective, state, calm, quiet)
3
thoughtless(adjective, state, trait)
3
tolerant(adjective, state, calm, reasonable)
2
breezy(adjective, state, mild, relaxed)
2
sunny(adjective, state, calm, quiet)
1
airy(adjective, state, trait)
1
blithe(adjective, state, trait)
1
blithesome(adjective, state, trait)
1
bouncy(adjective, state, trait)
1
bubbly(adjective, state, trait)
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APASmart Define. (2016). tranquil thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/tranquil/thesaurus/synonyms
ChicagoSmart Define. 2016. "tranquil thesaurus" https://smartdefine.org/tranquil/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, tranquil thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/tranquil/thesaurus/synonyms>.
MLASmart Define. "tranquil thesaurus" 3 March 2016. Web. 23 September 2026. <https://smartdefine.org/tranquil/thesaurus/synonyms>