Nor did Eric Ellman, my wise and imperturbable guide to the Mexican-American border river.
The Bohemian, his arms crossed on his breast, surveyed Peyrou, with imperturbable coolness.
"Not now," said Phil, patting his shoulder, with imperturbable good-nature.
Still we hear not a murmur from our imperturbable philosopher.
Then the doctor had understood, though his face was so imperturbable!
I finally asked, still adhering to my rle of the imperturbable chorus.
The Hebrew took up the scroll with imperturbable composure, "My child!"
While the battle was raging Grants general demeanor was imperturbable.
"Me no care if you be Gubnor or not," replied the imperturbable African.
Like many Europeans, he made up for his ignorance by imperturbable assurance, and had an answer ready for every question.
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.