But the idea has been criticized by some observers as unethical.

He and his partners were as unethical as you could imagine.

In fact, he said some of your behavior could even be categorized as unethical.

I still see him as unethical, untethered to the truth.

Conservative challenger Zac Goldsmith's campaign was criticized by many for what were viewed as unethical tactics.

Some of our team struck me as unethical.

They see fossil-fuel investments as adding to the risk of dangerous climate change and, therefore, as unethical.

When Friends hit the market, some climbers denounced them as unethical, saying they made climbing too easy.

We question the branding of trials as unethical on the basis of an imprecise sample size calculation process.

It has also faced criticism in the past for investing in companies perceived by some campaigners as unethical.

The government has condemned the program as unethical and inappropriate but said there is no law banning such a show.

This increasing expectation of transparency is one reason why black hat activities are ineffective as well as unethical, Maltin adds.

There is a view within the county that an untimely confirmation of the appointment of a suspended member would be perceived as unethical.

"Yes, I know, but I should have thought the method would strike you as unethical."

"I know it may strike you as unethical," he went on, "but standards aren't what they used to be.