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.
The tumult evidently had not affected his imperturbable gayety.
Still we hear not a murmur from our imperturbable philosopher.
They take an imperturbable delight in noise and mere annoyance.
I finally asked, still adhering to my rle of the imperturbable chorus.
Angela, the imperturbable, merely went on reading Bernard Shaw.
While the battle was raging Grants general demeanor was imperturbable.
I beg your pardon, he said with imperturbable irony, and turned.
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.