nieszanujący in English:

Disrespectful comments will not be tolerated.

Don't be disrespectful to your mother!

Nowadays students are more disrespectful than they used to be

In the U.S. it is disrespectful to slurp while eating noodles, but in Japan it is considered polite and even flattering.

He has the most disrespectful attitude towards women I've ever seen.