The term 'DIET COUSIN' is a combination of two words: 'DIET' and 'COUSIN'. DIET refers to a specific type of eating plan or regimen that is designed to help people lose weight or maintain a healthy lifestyle. COUSIN is a term used to refer to a relative who is related to another person through a common ancestor. The crossword solution for the term 'DIET COUSIN' is 'SENATE', which is a legislative body composed of members who are elected by the people of a particular state or country. The SENATE is responsible for making laws and representing the interests of its constituents.