Renege /(r?-n?j" [or] r?-n?g")/

Re·nege

Renege

v. t.
  1. To deny; to disown. [Obs.]
    All Europe high (all sorts of rights reneged) Against the truth and thee unholy leagued.
    — Sylvester.

Renege

v. i.
  1. To deny. [Obs.]
  2. To fail to keep (a commitment or promise); -- often used with on; as, to renege on one's promise.
  3. To revoke; to play a card that cannot legally be played according to the rules. (Card Playing) [R.]