Meaning of “tarnish” in the English Dictionary

"tarnish" in British English

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tarnishverb

uk /ˈtɑː.nɪʃ/ us /ˈtɑːr.nɪʃ/

tarnish verb (METAL)

[ I or T ] to make or (especially of metal) become less bright or a different colour

tarnished
adjective uk /ˈtɑː.nɪʃt/ us /ˈtɑːr.nɪʃt/

(Definition of “tarnish” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"tarnish" in American English

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tarnishverb [ I/T ]

us /ˈtɑr·nɪʃ/

(of metal surfaces) to become less bright or a different color:

[ I ] Silver tarnishes easily.

If something tarnishes your opinion of someone or something, you no longer believe the person or thing is as good as you had thought:

[ T ] The scandal has tarnished the agency’s reputation.

(Definition of “tarnish” from the Cambridge Academic Content Dictionary © Cambridge University Press)