refine
Definitions
To remove impurities or unwanted elements from a substance.
To improve something by making small changes or adjustments.
To develop a more polished, cultured, or sophisticated style.
Examples
The chef spent hours trying to refine the recipe until it was perfect.
Engineers are working to refine the design of the engine to improve fuel efficiency.
You should refine your essay by removing unnecessary adjectives and clarifying your main argument.