Repudiate

1. verb

   refuse to acknowledge, ratify, or recognize as valid

   “The woman repudiated the divorce settlement”

2. verb

   reject as untrue, unfounded, or unjust

   “She repudiated the accusations”

3. verb

   refuse to recognize or pay

   “repudiate a debt”

4. verb

   cast off

   “She renounced her husband”

   Similar: disown, renounce