- 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 imperturbably
Christian was steadily cheerful that morning, imperturbably practical.The Slave Of The Lamp
Henry Seton Merriman
"Be patient; the time will come," Jean imperturbably replied.The Downfall
Peter tried to find the speakers with his gaze for a moment and then went on imperturbably.The Vagrant Duke
"I did the best for you and the Company," said Makola, imperturbably.Tales of Unrest
"This is true in every particular," said Croustillac imperturbably.A Romance of the West Indies
- not easily perturbed; calm; unruffled
Word Origin and History for imperturbably
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.