Self-sustaining is an important term that describes something that can operate independently or without outside support. It can be hard to find the right word to describe this concept, but there are several synonyms that can be used. These include self-sufficient, self-reliant, self-supporting, self-contained, and autonomous. Each of these words describes something that can function on its own, without requiring assistance from others. Whether you are talking about a business, a community, or an individual, finding ways to become more self-sustaining is an important goal. These synonyms can help us to better understand and convey this important idea.