Body number four, under dreary pretences of being droll (when it was very melancholy indeed), made the shallowest pretences of concealing pitfalls of knowledge, into which it was the duty of these babies to be smuggled and inveigled.
There are no more uses of "droll" in the book.
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I appreciate her droll sense of humor.
I can usually count on a droll tweet a week from her.