The term 'DON'T WASTE' can be summarized by two crossword solutions: REUSE (5 letters) and USE (3 letters). This phrase is often used to encourage people to reduce their consumption of resources and to make the most of what they have. Reusing items, such as clothing, furniture, and electronics, is a great way to save money and help the environment. Additionally, using items responsibly and efficiently can help reduce waste and conserve resources.