Mr. Jackson had helped himself to a slice of the tepid filet which the mournful butler had handed him with a look as sceptical as his own, and had rejected the mushroom sauce after a scarcely perceptible sniff.
There are no more uses of "skeptical" in the book.
Show samples from other sources
I am skeptical about her plan.
She is skeptical any time someone says it is important she pay them a lot for a car repair.