Enroll in is a term used to describe the process of joining or entering a program, organization, or school. It can be done by filling out an application and providing the necessary documents. The two crossword solutions for the term Enroll In are JOIN (4 letters) and ENTER (5 letters). Joining or entering a program, organization, or school requires taking the necessary steps to become a part of it. This includes filling out an application, providing the necessary documents, and paying any applicable fees.