When someone is "brought to an end," what term can describe this action?

The term that describes the action of bringing something to an end is "terminate." This word specifically means to conclude or finish something, and is often used in various contexts such as contracts, employment, or processes. When we say something is terminated, it implies a definitive stopping point or cessation of activity.

In contrast, "truncate" refers to cutting something short, which may not necessarily mean it ends completely. It often implies that a part has been removed but not that the whole is finished. "Transcendent" pertains more to going beyond limits or surpassing, and does not relate to ending something. Lastly, "tirade" describes a long, angry speech or verbal attack, which again does not imply an action of concluding or finishing something. Therefore, the most accurate choice for describing an action that brings something to an end is "terminate."