English主要词典
tarnish
Universal Words
verb, noun
verb
1 if metal tarnishes or sth tarnishes it, it no longer looks bright and shiny:
[V] The mirrors had tarnished with age. * [VN] The silver candlesticks were tarnished and dusty.
2 [VN] to spoil the good opinion people have of sb/sth:
He hopes to improve the newspaper's somewhat tarnished public image.
noun [sing.,U] a thin layer on the surface of a metal that makes it look dull and not bright