| His face had an almost African imperturbability, impassive, incomprehensible. |
| Robert Mitchum, their co-star, was legendary for his imperturbability. |
| The absolute imperturbability of the man who had once been his friend was disconcerting. |
| Yet for many making the link, it is undoubtedly his imperturbability rather than consistency of play that informs comparisons. |
| In the physician or surgeon no quality takes rank with imperturbability. |
| Quasimodo had resumed, to all appearance, his first imperturbability. |
