The word 'tarnishes' is correct and usable in written English.
You can use it to describe when something gradually loses its quality or reputation. For example: "Over time, the company's reputation has tarnished due to its questionable practices."
Robben tarnishes his own brilliance with these con-tricks.
Much of what tarnishes Japan's image is the result of demography more than half its population is over 45 as well as its poor policy in dealing with it.
It will be shifted upwards to provincial-level authorities in theory making it more difficult for local officials to persuade or order judges to see things their way on illegal land seizures, polluting factories and so on.Central leaders have a keen interest in stamping out such behaviour because it tarnishes the party's image.
Each case that surfaces further tarnishes the once squeaky-clean image of an industry that had gradually clawed back its reputation for propriety after a spate of scandals during the Depression.To some extent the industry's troubles are a result of its extraordinary success.
If an all-out assault by its critics further tarnishes Wal-Mart's image, it could eventually hamper sales growth.
Also, there is no shortage of it in China, which tarnishes its allure.
It ranks 164th out of 183 countries in Transparency International's corruption perceptions index.The horse scandal tarnishes the Americans' image, too.
Darren Hughes of the Electoral Reform Commission in Britain thinks boothies make voting more fun and therefor more popular.Terrible news, say those who fear this tarnishes the very essence of ballot secrecy.
Frivolous as they seem, staging these events in ghastly places not only tarnishes FIFA, the International Olympic Committee IOCC) and other overseers.
"A lot of stuff is coming out that tarnishes the image of the LDP and holds up a mirror to the country.
The metal is silvery white and tarnishes slowly in dry air at room temperature.
