tarnish
verb (used with object)
to dull the luster of (a metallic surface), especially by oxidation; discolor.
tarnishing
-
present participleof tarnish.present participle
A verb form that is used in progressive verb constructions and may also function as a modifier or a gerund.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Now, researchers at Tulane University have uncovered an important reason why the precious metal remains so resistant to tarnishing.
From Science Daily ● Jul. 12, 2026
As early as 1859 the New York Times associated Cornelius Vanderbilt with the idea of the medieval robber baron, thus tarnishing the image of the country’s biggest shipowner.
From The Wall Street Journal ● May 10, 2026
She took down the post after union veterans accused her of tarnishing the movement, he said.
From Los Angeles Times ● Mar. 27, 2026
Subtle localization—without tarnishing the brands’ global image—has been central to recent success, analysts told Barron’s.
From Barron's ● Mar. 7, 2026
But there was nothing there but what had always been there: empty ocean the color of pewter, tarnishing to black now as night fell.
From "Son" by Lois Lowry
