What term describes the process of stopping an event or agreement?

The term that describes the process of stopping an event or agreement is "cancellation." This term is commonly used in a variety of contexts, such as legal agreements, event planning, and contract law, to signify that a previously agreed-upon action or event is no longer going to take place. It encompasses the idea of nullifying the terms of an agreement or preventing an event from occurring, thereby fully terminating the responsibilities or expectations set forth.

The other terms do not apply to this context. "Bludgeon" refers to a heavy club used as a weapon or to describe forceful persuasion, which does not align with the concept of stopping an event. "Cauterize" is a medical term referring to the act of burning a wound to stop bleeding or prevent infection, and it does not relate to agreements or events. "Chauvinism" denotes an excessive or prejudiced loyalty or support for one's own group, often in a national or gender context, which again fails to connect with the idea of cancellation. Thus, "cancellation" is the most appropriate term for halting an event or agreement.