There are many ways to express the idea of "getting better". Some great synonyms for this concept include improving, progressing, advancing, developing, upgrading, ameliorating, augmenting, enhancing, and refining. Each of these words can imply different nuances, such as improving something overall, increasing its value or quality, or refining specific details. Progressing suggests moving forward step by step, while upgrading and enhancing imply a significant upswing in quality or capability. Ameliorating conveys the idea of making something better in response to a problem or negative situation. No matter which synonym you use, it's clear that "getting better" encompasses a wide range of positive change and growth.