Source : Webster's Revised Unabridged Dictionary (1913)

Forswear \For*swear"\, v. t. [imp. {Forswore}; p. p. {Forsworn};
   p. pr. & vb. n. {Forswearing}.] [OE. forsweren, forswerien,
   AS. forswerian; pref. for- + swerian to swear. See {For-},
   and {Swear}, v. i.]
   1. To reject or renounce upon oath; hence, to renounce
      earnestly, determinedly, or with protestations.

            I . . . do forswear her.              --Shak.

   2. To deny upon oath.

            Like innocence, and as serenely bold As truth, how
            loudly he forswears thy gold!         --Dryden.

   {To forswear one's self}, to swear falsely; to perjure one's
      self. ``Thou shalt not forswear thyself.'' --Matt. v. 33.

   Syn: See {Perjure}.

Source : WordNet®

forswearing
     n : the act of renouncing; sacrificing or giving up or
         surrendering (a possession or right or title or privilege
         etc.) [syn: {renunciation}, {forgoing}]