- incapable of being upset or agitated; not easily excited; calm: imperturbable composure.
Origin of imperturbable
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for imperturbable
Nor did Eric Ellman, my wise and imperturbable guide to the Mexican-American border river.My Night on the Border
May 25, 2010
"Not now," said Phil, patting his shoulder, with imperturbable good-nature.Malbone
Thomas Wentworth Higginson
Then the doctor had understood, though his face was so imperturbable!Ester Ried Yet Speaking
"Oh, ay, and some more forpye," was the imperturbable response.Camps, Quarters and Casual Places
The Hebrew took up the scroll with imperturbable composure, "My child!"Leila, Complete
"Me no care if you be Gubnor or not," replied the imperturbable African.The History of the First West India Regiment
A. B. Ellis
- not easily perturbed; calm; unruffled
Word Origin and History for imperturbable
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.