The term 'EATS NOTHING' can be solved by the word 'FASTS', which is a five-letter word. Fasting is the practice of abstaining from food and drink for a period of time, usually for religious or health reasons. It is a common practice in many religions and cultures, and has been used as a form of protest or political statement. Fasting is also used as a way to detoxify the body and improve overall health.