burnish
verb (used with object)
to polish (a surface) by friction.
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Mayor Anne Hidalgo, who is campaigning for the French presidency, has been burnishing her credentials as an ecologically minded Socialist candidate.
From New York Times ● Oct. 2, 2021