He made a reasoned decision after careful consideration.

She reasonably asked for a raise after working hard for a year.

The price of the product is reasonable.

I'm asking for a reason.

The decision to increase the price of the product was made based on reasonability.

The reasoner presented a compelling argument.

Critical thinking is an important skill for reasoning.

The reason is that I was late for work.

He reasoned about the cause of the problem.

You might as well reason with the wolf as try to persuade that man.