risible
********************************************************************************
A. adj.

    1. Having the faculty or power of laughing; inclined or given to
laughter.

    2. Pertaining to, or used in, laughter.

    3. Capable of exciting laughter; laughable, ludicrous, comical.

    B. n. pl. The risible faculties or muscles (see A. 2). Chiefly U.S.

    Hence {sm}risibleness, `laughing faculty' (Bailey, vol. II, 1727);
{sm}risibly adv., `in a risible manner; laughably' (Webster, 1847).