1
agreeable
1
bucolic
1
calm
1
character trait(noun, adjective)
1
characteristic
1
composed
1
controlled
1
property
1
quiet(verb, adjective)
1
relaxed
1
sleepy
1
still
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APASmart Define. (2016). tranquil thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/tranquil/thesaurus/broader
ChicagoSmart Define. 2016. "tranquil thesaurus" https://smartdefine.org/tranquil/thesaurus/broader (accessed September 22, 2026).
HarvardSmart Define 2016, tranquil thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/tranquil/thesaurus/broader>.
MLASmart Define. "tranquil thesaurus" 3 March 2016. Web. 22 September 2026. <https://smartdefine.org/tranquil/thesaurus/broader>