4
sangfroid(calmness, composure, coolness, levelheadedness, level-headedness)
4
self-possession(noun, calm, calmness, composure, detachment)
3
tranquility(noun, calm, quiet, rest, peace)
3
leisure(noun, stop, calm, break, quiet)
3
dispassion(noun, calm, quiet, rest, peace)
3
equilibrium(noun, calm, serenity, equanimity, self-possession)
3
immobility(noun, calm, silence, rigidity, stillness)
3
orderliness
3
passivity
3
patience(noun, calm, quiet, rest, peace)
3
peace and quiet(noun, expression, idiom, peace, silence)
3
peaceableness
3
sang-froid(noun, calm, serenity, equanimity, self-possession)
3
self-control(noun, calm, calmness, composure, serenity)
3
sleep(noun, stop, calm, break, quiet)
3
untroubledness(noun, calm, quiet, calmness, serenity)
2
assurance(noun, calm, calmness, composure, serenity)
2
ataraxia(calmness, composure, coolness, levelheadedness, level-headedness)
2
ataraxy(calmness, composure, coolness, levelheadedness, level-headedness)
2
collectedness(noun, calm, serenity, equanimity, self-possession)
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APASmart Define. (2016). tranquillity thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/tranquillity/thesaurus/synonyms
ChicagoSmart Define. 2016. "tranquillity thesaurus" https://smartdefine.org/tranquillity/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, tranquillity thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/tranquillity/thesaurus/synonyms>.
MLASmart Define. "tranquillity thesaurus" 29 February 2016. Web. 23 September 2026. <https://smartdefine.org/tranquillity/thesaurus/synonyms>