to treat · treatment

He doesn't take this seriously.

Teachers should treat all their students impartially.

The way a country treats its intellectuals is a sign of its civility. The way a country treats its farmers is a sign of its conscience.

For some companies their treatment of their employees or clients at any given time could affect their share prices and so inevitably have a great influence on the company’s success or failure.

Why did he treat you like that?