A gentleman entered, with a pleasant, cultured face, high-nosed and pale, with something perhaps of petulance about the mouth, and with the steady, well-opened eye of a man whose pleasant lot it had ever been to command and to be obeyed.
There are no more uses of "petulant" in the book.
Show samples from other sources
She stomped her foot like a petulant child.
She is petulant by nature and was clearly insulted by the question.