s not easily perturbed or excited or upset; marked by extreme calm and composure
hitherto imperturbable, he now showed signs of alarm an imperturbable self-possession
Sir Mobolaji Bank-Anthony, 59, known as "The Black Englishman" for his impeccable manners and imperturbable air, began by importing cuckoo clocks and marble statues.
His worldview was famously imperturbable (say the word as Bing would, with the blowfish p's and b's).
Dapper gentlemen with quick eyes and imperturbable faces frequent, or used to frequent, a little restaurant at 50th Street and Broadway, Manhattan.
Father, son run India's Apollo Tyres The father-son team leading Apollo Tyres of India has been imperturbable despite vehement criticism for strapping their company with a huge debt to buy a corporation twice its size, Cooper Tire & Rubber Co.
June 22, 2013 - The Findlay Courier
Carl Bernstein in Washington Times The real thing about her was her imperturbable manner and her constant good nature. She could edit a story so fast and so deftly and a few minutes later your story would be better,recalled Mr. Bernstein, who got his start in journalism as a...
Tony Abbott in ABC Online In his book, Battlelines, Abbott says of Minchin that he is "an effective political warrior ...... imperturbable under attack."