Courteous

You must be courteous to any guest.

It is very courteous of you to call on me.

It was courteous of him to write a letter of thanks.

So characteristic of what a pious Christian would say, this courteous phrase.

I like him not because he's courteous, but because he's honest.

Tom is courteous.

You're courteous.

Be courteous.

Be courteous and respectful.

I think Tom is courteous.

a courteous gentleman   a courteous gesture

Nectar ran / In courteous fountains to all cups outreach'd; / And plunder'd vines, teeming exhaustless, pleach'd / New growth about each shell and pendent lyre; [...]

His exhortations to his assistants to waste no time in getting on with the job, and to be tactful and courteous with those outside the railway service with whom they had to deal, are as apposite today as they were a century ago.