zgodny z prawem 英語で:

He recognized his son as lawful heir.

I think putting thieves to death is not lawful; and it is plain and obvious that it is absurd and of ill consequence to the commonwealth that a thief and a murderer should be equally punished.

Which prince is the legitimate heir to the throne?

We consider public libraries a legitimate citizen's right.

The Cockney mode of speech, with its unpleasant twang, is a modern corruption without legitimate credentials, and is unworthy of being the speech of any person in the capital city of the Empire.