- incapable of being upset or agitated; not easily excited; calm: imperturbable composure.
Origin of imperturbable
SynonymsSee more synonyms for imperturbable on Thesaurus.com
Examples from the Web for imperturbability
We all looked at Mr. Blair, who gazed with imperturbability at Waters.In a Steamer Chair and Other Stories
He gazed on us from behind the mask of his Indian imperturbability.The Forest
Stewart Edward White
He was determined to break down the other's wall of imperturbability.The Grell Mystery
Nothing kept him in check save the imperturbability of the seated figure.Prairie Folks
Quasimodo had resumed, to all appearance, his first imperturbability.Notre-Dame de Paris
- not easily perturbed; calm; unruffled
Word Origin and History for imperturbability
c.1500, from Middle French imperturbable and directly from Late Latin imperturbabilis "that cannot be disturbed" (Augustine), from assimilated form of in- "not, opposite of" (see in- (1)) + *perturbabilis, from Latin perturbare "to confuse, disturb" (see perturb). Related: Imperturbably; imperturbability.