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 the debate drags out, the publicity is tarnishing Club Med’s eco-credentials and could make it increasingly hard to sell the resort, which will also offer safaris, as a dream destination to potential guests.
From The Wall Street Journal ● May 31, 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
However, the government has criticised their portrayal as aimed at tarnishing the country's image, insisting the country is safe.
From BBC ● Nov. 25, 2025
The dried corsages were thrown out long ago, the diplomas and class pins and photos must be down in my mother’s cellar, in the steamer trunk along with the tarnishing silver.
From "Cat's Eye" by Margaret Atwood
