Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun imperturbableness

1 sense of imperturbableness

Sense 1
coolness, imperturbability, imperturbableness -- (calm and unruffled self-assurance; "he performed with all the coolness of a veteran")
       => calmness -- (a feeling of calm; an absence of agitation or excitement)