Which of the following best defines 'cease'?

The term 'cease' means to come to an end or to stop doing something. This definition fits with the understanding that when an action ceases, it no longer occurs. In various contexts, 'cease' can indicate the termination of processes, activities, or behaviors, such as when a business ceases operations or when a person ceases to speak.

Understanding the other choices: 'To begin' conveys the initiation of an action, which is the opposite of ending. 'To continue' suggests ongoing activity without interruption, again contrasting with the idea of stopping. 'To increase' indicates growth or amplification, which also does not relate to the concept of ending. Thus, the best definition linked to 'cease' among the given options is indeed 'to come to an end.'