Follow-on is a commonly used term in business, sports, and even military. It means to continue or extend the course of an action or strategy after a previous one has been completed. There are various synonyms for follow-on, such as continuation, sequel, subsequent, next, and additional. These words can be used interchangeably depending on the context. For instance, in sports, follow-on can be replaced by the word innings if it refers to the second batting turn of a team. In business, the word follow-up can be considered a close synonym as it signifies the act of checking the progress after the initial action. Nevertheless, all words share a common meaning of continuing a prior process or task.