His imperturbability always ‘had the effect of a goad upon his father’s temper.
We all looked at Mr. Blair, who gazed with imperturbability at Waters.
The Premier's imperturbability stood him in even greater stead at later proceedings.
He was determined to break down the other's wall of imperturbability.
Each tenant was the peer in imperturbability of a male divorcee in Connecticut, digging clams to earn alimony.
I back a woman's wits against a statesman's imperturbability.
Rutley was amazed, but maintaining his imperturbability, exclaimed: You propound a riddle, my poor man.
Sister forgot her imperturbability, gave a jump, and began to roar.
His lordship was slightly moved out of an imperturbability that he had studiously cultivated.
His power seemed almost Napoleonic; his imperturbability was absolute.
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.