'Imperturbability' definitions:
Definition of 'imperturbability'
From: WordNet
noun
Calm and unruffled self-assurance; "he performed with all the coolness of a veteran" [syn: coolness, imperturbability, imperturbableness]
Definition of 'Imperturbability'
From: GCIDE
- Imperturbability \Im`per*turb`a*bil"i*ty\, n. The state or quality of being imperturbable. [1913 Webster]