Third-person singular simple present indicative form of tarnish.(verb)
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Use "tarnishes" in a sentence
"McKenna said that "from my perspective" the condom handout "tarnishes" the Olympian image of discipline, determination and greatness in general."
"I'm going to laugh at anyone who claims this "tarnishes" his Olympic medals."
"This error is even perpetuated by the writers themselves who like Huxley, live long enough to look back, as in his truly grim, and what is worse, far less lyrical 1958 essay, "Brave New World Revisited," proving that the author is as liable to the sin of retrospection that tarnishes the original work as anyone else."