imperturbable

American  

[im-per-tur-buh-buhl] / ˌɪm pərˈtɜr bə bəl /

adjective

1. incapable of being upset or agitated; not easily excited; calm.

   imperturbable composure.

   Synonyms:

   unmoved, cool, impassive, collected, composed

---

imperturbable British  

/ ˌɪmpɜːˈtɜːbəbəl, ˌɪmpɜːtɜːˈbeɪʃən /

adjective

1. not easily perturbed; calm; unruffled

---

Other Word Forms

• imperturbability noun
• imperturbableness noun
• imperturbably adverb
• imperturbation noun

Etymology

Origin of imperturbable

1490–1500; < Late Latin imperturbābilis. See im- ², perturbable ( def. )

Example Sentences

Cleven, imperturbable yet not insensitive, doesn’t drink or gamble or dance — he’s a movie cowboy — and Egan is the opposite.

From Los Angeles Times • Jan. 25, 2024

Revelations lie like a buried treasure under the wondrous but imperturbable musical surface.

From Los Angeles Times • Mar. 29, 2023

“Welcome to the Grand Canyon!” says our guide, Karla Kennedy, a tall, imperturbable veteran of some 12 rim-to-rim hikes this year alone.

From Seattle Times • Dec. 4, 2021

With his white beard, colorful turbans, flowing cloaks, walking stick and silver bracelets and rings, Mr. Smith had a striking presence with a steady, imperturbable smile.

From Washington Post • Oct. 1, 2021

“We have to prepare some meat and fish,” she would order the four cooks, who hastened to have everything ready under the imperturbable direction of Santa Sofía de la Piedad.

From "One Hundred Years of Solitude" by Gabriel Garcia Marquez