Facetious (?), a. [Cf. F. facétieux. See Facetiæ.] 1. Given to wit and good humor; merry; sportive; jocular; as, a facetious companion.
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2. Characterized by wit and pleasantry; exciting laughter; as, a facetious story or reply.

-- Fa*ce"tious*ly, adv. -- Fa*ce"tious*ness, n.
[1913 Webster]