The term ONE LEAVING THE COUNTRY can be summarized as a SECEDER, which is a seven-letter word. A seceder is someone who withdraws from an organization or alliance, such as a country. This term is often used in the context of secession, which is the withdrawal of a group of people from a larger political entity, such as a state or nation. Secession is a form of protest against the policies of the larger entity, and it is often seen as a way to gain independence or autonomy.