The crossword solutions for the term 'Build On, With 'TO'' are ADD. This is a three letter word that means TO increase or expand upon something. It can be used in many contexts, such as when someone wants TO ADD more features TO a product or when someone wants TO ADD more details TO a story. It can also be used TO describe the process of adding new elements TO an existing structure. In any case, the term 'Build On, With 'TO'' implies that one should continue TO ADD TO something in order TO make it better.