to make better
"The editor improved the manuscript with his changes"
To make (something) better; to increase the value or productivity (of something).
"The new fertilizer helped improve the yield of our crops significantly."
In plain English: To improve means to make something better or help it get stronger.
"She studied hard to improve her grades for the next term."
Usage: Use "improve" when you want to state that the quality, condition, or performance of something has become better over time or through effort. You can apply it to tangible objects like a car engine as well as abstract concepts like your skills or relationships.
The word improve entered English via the Anglo-French phrase enpruver, which combined a prefix meaning "in" with a root for profit. Originally describing something that became advantageous or beneficial, it evolved to mean making something better over time.