renegue

/R IY0 N IH0 G/
verb
  1. 1

    To break a promise or commitment; to go back on one's word.

  2. 2

    In a card game, to break one's commitment to follow suit when capable.

  3. 3

    To deny; to renounce

Source: https://en.wiktionary.org/wiki/renege, https://en.wiktionary.org/wiki/renegue