re·pu·di·ate / riˈpyoōdēˌāt/ • v. [tr.] refuse to accept or be associated with: she has repudiated policies associated with previous party leaders. ∎  deny the truth or validity of: the minister repudiated allegations of human rights abuses. ∎  chiefly Law refuse to fulfill or discharge (an agreement, obligation, or debt): breach of a condition gives the other party the right to repudiate a contract. ∎  (esp. in the past or in non-Christian religions) divorce (one's wife).DERIVATIVES: re·pu·di·a·tion / riˌpyoōdēˈāshən/ n.re·pu·di·a·tor / -ˌātər/ n.

repudiate put away (a wife); reject XVI; (orig. U.S.) refuse to acknowledge (a debt, etc.) XIX. f. pp. stem of L. repudiāre, f. repudium divorce; see -ATE2.
So repudiation XVI. — L.