Opposite Of Improve, Antonyms of Improve, Meaning and Example Sentences Improve means; develop, improve, increase, remedy, advance, cultivate, evolve, build up, become better. Opposites of Improve; ruin diminish impair decrease hinder recede reduce lessen lower weaken compromise debase minimise minimize undermine worsen abate cur Example Sentences with Improve; Your Spanish has improved a lot. There is an urgent need for improved living conditions. My father is improving in health. My mother tries to improve her French. Here are 400 Important Opposite Words List boy – girl brave – cowardly break – fix broad – narrow brother – sister build – destroy busy – lazy buy – sell calm –