| Date: | 1400-1500 |
| Language: | Old French |
| Origin: | ternir 'to make dull' |
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tar‧nish1

1 [transitive]HCE if an event or fact tarnishes someone's reputation, record, image etc, it makes it worse :
His regime was tarnished by human rights abuses.
His regime was tarnished by human rights abuses.2 [intransitive and transitive] if metals such as silver, copper, or brass tarnish, or if something tarnishes them, they become dull and lose their colour :
Gold does not tarnish easily.
tarnished silver spoons
Gold does not tarnish easily.
tarnished silver spoons