Improve/ɪmˈpruːv/ Definition 1 of 3Pro Tip 1/3Action Required Indicates active effort to cause positive change, not just waiting for things to get better. You need to improve your grades by studying more. Pro Tip 2/3Continuous Process Improvement suggests ongoing work, not a one-time fix. She works every day to slowly improve her English. Pro Tip 3/3Positive Outcome Improvement always refers to a positive change in quality, not simply a change. His attitude has improved greatly since last year.