13
coolness(noun, calm, control, order, cool)
13
equanimity(noun, calm, control, order, cool)
13
composure(noun, calm, control, order, cool)
13
patience(noun, restraint, capacity, calmness, composure)
12
self-possession(noun, calm, cool, feelings, balance)
10
aplomb(noun, calm, cool, feelings, balance)
9
sang-froid(noun, calm, cool, feelings, balance)
8
calmness(noun, calm, control, order, cool)
8
poise(noun, calm, cool, feelings, restraint)
8
self-control(noun, calm, restraint, balance, capacity)
7
serenity(noun, calm, control, order, restraint)
6
unflappability(noun, calm, cool, feelings, balance)
6
cool(noun, calm, slang, feelings, restraint)
6
imperturbableness(noun, calm, cool, feelings, balance)
6
tranquillity(noun, calm, calmness, composure, detachment)
5
balance(noun, calm, cool, feelings, poise)
5
calm(noun, control, order, poise, calmness)
5
peace(noun, control, order, calmness, composure)
5
presence(noun, cool, calmness, composure)
4
phlegm(noun, calmness, composure, coolness, unflappability)
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APASmart Define. (2015). imperturbability thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/imperturbability/thesaurus/synonyms
ChicagoSmart Define. 2015. "imperturbability thesaurus" https://smartdefine.org/imperturbability/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, imperturbability thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/imperturbability/thesaurus/synonyms>.
MLASmart Define. "imperturbability thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/imperturbability/thesaurus/synonyms>