Source : Webster's Revised Unabridged Dictionary (1913)

Antic \An"tic\, a. [The same word as antique; cf. It. antico
   ancient. See {Antique}.]
   1. Old; antique. (Zo["o]l.) ``Lords of antic fame.'' --Phaer.

   2. Odd; fantastic; fanciful; grotesque; ludicrous.

            The antic postures of a merry-andrew. --Addison.

            The Saxons . . . worshiped many idols, barbarous in
            name, some monstrous, all antic for shape. --Fuller.

Antic \An"tic\, n.
   1. A buffoon or merry-andrew; one that practices odd
      gesticulations; the Fool of the old play.

   2. An odd imagery, device, or tracery; a fantastic figure.

            Woven with antics and wild imagery.   --Spenser.

   3. A grotesque trick; a piece of buffoonery; a caper.

            And fraught with antics as the Indian bird That
            writhes and chatters in her wiry cage. --Wordsworth.

   4. (Arch.) A grotesque representation. [Obs.]

   5. An antimask. [Obs. or R.]

            Performed by knights and ladies of his court In
            nature of an antic.                   --Ford.

Antic \An"tic\, v. t. [imp. & p. p. {Anticked}, {Antickt}.]
   To make appear like a buffoon. [Obs.] --Shak.

Antic \An"tic\, v. i.
   To perform antics.

Source : WordNet®

antic
     adj : ludicrously odd; "Hamlet's assumed antic disposition";
           "fantastic Halloween costumes"; "a grotesque reflection
           in the mirror" [syn: {fantastic}, {fantastical}, {grotesque}]

antic
     v : act as or like a clown [syn: {clown}, {clown around}]

antic
     n : a ludicrous or grotesque act done for fun and amusement
         [syn: {joke}, {prank}, {trick}, {caper}, {put-on}]