That imperturbability of his did take some getting used to.

I'd practiced a studied imperturbability so long, it actually worked.

One constant in the novel is the title character's imperturbability.

"And of course it was your talking about the chair that gave the whole thing away," Colin went on, with complete imperturbability.

The very imperturbability that clothed him like armor was something new to her experience.

She is a figure of sublime imperturbability, gazing down her nose at us.

This cold imperturbability of spirit continued in her now.

Dom, however, was relaxed, facing whatever the future might bring with practiced imperturbability.

The look of calm imperturbability vanished, and a deeply troubled expression took its place.

Evidently his Eastern imperturbability was not to be disturbed by such trifles.

There was that difference in their characters, the imperturbability of one, the charisma of the other.

The latter, in spite of his imperturbability, grew pale.

These people lack the necessary imperturbability of mind, which may be one good reason why they're not permitted to hold hands before the marriage ceremony".

His face had an almost African imperturbability, impassive, incomprehensible.

"Five hundred degrees," the robot said with mechanical imperturbability.

Her imperturbability was not as complete as she pretended; Kirk could see the anger building up.

Saavik said nothing; she simply gazed at him with her cool imperturbability.

His imperturbability, real or assumed, had all departed.

Pucky stood slightly to one side, a small monument of imperturbability.

"You don't know what hell is," she snapped back, dropping the mask of her imperturbability.

Yes, the captain was to be called, and to set an example of imperturbability, he would have to pretend to be asleep.

These people lack the necessary imperturbability of mind."

The imperturbability was not a pose, either.

There they did take to the water and acquired a new guide without the imperturbability of Mashid.

Seeing this, the captain schooled his features to imperturbability and said merely, "Ah.