The crossword solutions for the term FEED, SUSTAIN are NOURISH (7 letters). NOURISH is an action that involves providing food and other essential nutrients to sustain life. It is a verb that is used to describe the act of providing sustenance to something or someone in order to keep them healthy and alive. Nourishing can also refer to providing emotional support and care. Nourishing is an important part of caring for oneself and others.