4
repose(noun, calm, control, order, poise)
4
collectedness(noun, calm, cool, feelings, balance)
4
dispassion(noun, calm, poise, calmness, composure)
4
nonchalance(noun, calm, feelings, balance, poise)
4
quiet(noun, calm, control, order, poise)
4
stoicism(noun, restraint, capacity, calmness, fortitude)
3
coldness(noun, calmness, composure, unflappability)
3
control(noun, calm, order, poise, calmness)
3
cool-headedness
3
indifference(noun, calmness, composure, unflappability)
3
peace of mind(noun, expression, idiom, calm, poise)
3
placidity(noun, calm, control, order, poise)
3
resignation(noun, restraint, fortitude, stamina, perseverance)
3
rest(noun, control, order, calmness, serenity)
3
sangfroid(noun, cool, calmness, composure, coolness)
3
tranquility(noun, calm, control, order, quiet)
2
assurance(noun, calm, poise, calmness, composure)
2
ataraxy(calmness, composure, coolness, levelheadedness, level-headedness)
2
chilliness
2
constancy(noun, restraint, capacity, fortitude, composure)
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APASmart Define. (2015). imperturbability thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/imperturbability/thesaurus/synonyms
ChicagoSmart Define. 2015. "imperturbability thesaurus" https://smartdefine.org/imperturbability/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, imperturbability thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/imperturbability/thesaurus/synonyms>.
MLASmart Define. "imperturbability thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/imperturbability/thesaurus/synonyms>