nieszczery in inglese:

Do I look dishonest or what?

What a dishonest fellow!

Many politicians are dishonest.

They're dishonest people, and they'll try to charge you five dollars.

John claimed that the dishonest salesman had tricked him into buying a useless piece of machinery.

He is a thoroughly dishonest character.

He employed dishonest means in his business.

It is our national conviction that politics is a dirty and dishonest pursuit.

Don’t be dishonest about how much money you have spent.

He was not usually a dishonest person, so it was strange that he chose to hide the truth about finding the money.

They admitted that there were dishonest officers in the police force.

He is the most dishonest person I know. I've never heard him tell the truth.

All right, it was dishonest.

The newspapers are calling him a dishonest politician.

I would rather be poor than make money by dishonest means.

If you are insincere in your change of heart, there will be much death and suffering.

an insincere smile

Don’t believe what Greg says, he’s totally insincere.

But even an insincere or simple emotion is easy for a person to detect.

He is insincere in saying that...

The letter sounds forced, what is worse, insincere.

They say fine words are no virtue if they're insincere and that's him in a nutshell. He's all talk but doesn't mean a word of it.

Everyone loves to hear praise, but over-praise has the opposite effect of sounding insincere.

"Take all the time you need," I told her with a disingenuous smile

And heaven forbid that one world leader should shake hands with another whose ideology differs deeply, since people on both sides will judge this as a disingenuous move at best, and at worst, a betrayal of the leader’s values.