Unlike our irascible friend Wrench, he had the easiest way in the world of taking things which might be supposed to annoy him, being a well-bred, quietly facetious man, who kept a good house, was very fond of a little sporting when he could get it, very friendly with Mr. Hawley, and hostile to Mr. Bulstrode.
He kept him in his own room for the evening and saw him to bed, Raffles all the while amusing himself with the annoyance he was causing this decent and highly prosperous fellow-sinner, an amusement which he facetiously expressed as sympathy with his friend’s pleasure in entertaining a man who had been serviceable to him, and who had not had all his earnings.
There are no more uses of "facetious" in the book.
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I trust you didn’t take her facetious remarks seriously.
You must not think me necessarily foolish because I am facetious, nor will I consider you necessarily wise because you are grave.