TV series example of the word

Game of Thrones Season 7, Episode 5
It's when a man sets aside his lawful wife.

Game of Thrones Season 6, Episode 5
We men of the North are right good hands at keeping people lawful.

Game of Thrones Season 6, Episode 5
- The lawful ascension. - What's that mean?

Game of Thrones Season 3, Episode 1
I am your son and lawful heir.

Game of Thrones Season 8, Episode 4
the lawful son of Robert Baratheon.