It may have been a flash of honesty in him; or mere prudential policy which, under the circumstance, imperiously forbade the slightest symptom of open disaffection, however transient, in the important chief officer of his ship.
There are no more uses of "imperious" in the book.
Show samples from other sources
She dismissed the matter with an imperious wave of her hand.
People don’t generally warm to her. She comes across as imperious.