140 entries under relaxed topic. ×

6
unhurried(adjective, feature, state, calm, quiet)
5
mellow(adjective, calm, quiet, kind, smooth)
5
phlegmatic(adjective, calm, quiet, still)
5
possessed(adjective, calm, quiet, still)
5
stolid(adjective, calm, quiet, casual)
4
unconcerned(adjective, feature, state, calm, quiet)
4
carefree(adjective, feature, state, calm, quiet)
4
casual(adjective, feature, state, calm, informal)
4
contented(adjective, feature, state, calm, quiet)
4
easeful(adjective, calm, quiet, light, smooth)
4
free and easy(expression, adjective, idiom, feature, state)
4
happy-go-lucky(adjective, feature, state, mild)
4
insouciant(adjective, feature, state, mild)
4
laid-back(adjective, feature, state, calm, quiet)
4
lazy(adjective, calm, mild, casual)
4
light(adjective, feature, state, calm, quiet)
4
philosophical(adjective, calm, quiet, gentle)
4
serious(adjective, calm, cool, easygoing)
4
together(adjective, calm, quiet, cool)
4
undemanding(adjective, feature, state, calm, quiet)
10 years ago|32k views|share |citing 
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>