To refuse to accept or be associated with something. The politician decided to repudiate the controversial statement made by his colleague.
To deny the truth or validity of something. The scientist was quick to repudiate the claims made by the opposing research team.
To refuse to fulfill or discharge an agreement, obligation, or debt. The company decided to repudiate the contract due to the other party's breach of terms.
Archaic: To divorce or formally disown (one's spouse). Under the old law, a husband could repudiate his wife with a simple declaration.