A state of bodily equilibrium:
(Countable) The result or product of being cool, as in chilly.
Coolness and composure, especially in trying circumstances.
Full possession or control of one's feelings, actions, etc.; self-command; composure
(Slang) Cool, dispassionate attitude or manner
Lack of agitation or excitement; tranquillity; serenity
Find another word for imperturbableness. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for imperturbableness, like: aplomb, balance, collectedness, composure, coolness, equanimity, imperturbability, nonchalance, poise, sang-froid and self-possession.