The term 'EMBARK ON' can be broken down into five crossword solutions: LAUNCH (6 letters), ENTER (5 letters), INITIATE (8 letters), COMMENCE (8 letters), and BEGIN (5 letters). All of these words mean to start or INITIATE something, and are often used in the context of a journey or project. To 'LAUNCH' is to set off on a voyage, while to 'ENTER' is to BEGIN a course of action. To 'INITIATE' is to start something, while to 'COMMENCE' is to BEGIN an undertaking. Finally, to 'BEGIN' is to start something. All of these words can be used to describe the act of embarking on a journey or project.