\Ris"i*ble\, a. [F., fr. L. risibilis, fr. ridere,
risum, to laugh. Cf. {Ridiculous}.]
1. Having the faculty or power of laughing; disposed to
   laugh.
         Laughing is our busines, . . . it has been made the
         definition of man that he is risible. --Dr. H. More.
2. Exciting laughter; worthy to be laughed at; amusing.
   ``Risible absurdities.'' --Johnson.
         I hope you find nothing risible in my complaisance.
                                               --Sir W.
                                               Scott.
3. Used in, or expressing, laughter; as, risible muscles.
Note: Risible is sometimes used as a noun, in the plural, for
      the feeling of amusement and for the muscles and other
      organs used in laughing, collectively; as, unable to
      control one's risibles.
Syn: Ludicrous; laughable; amusing; ridiculous -- {Risible},
     {Ludicrous}, {Ridiculous}.
Usage: Risible differs from ludicrous as species from genus;
       ludicrous expressing that which is playful and
       sportive; risible, that which may excite laughter.
       Risible differs from ridiculous, as the latter implies
       something contemptuous, and risible does not.