In what context?
In the area of education it would be teaching being conducted by a person lawfully credentialed, licensed and trained in the subject matter which they are instructing.
In the area of law enforcement it would be the giving of an instruction, or order, given legally and on proper grounds, by someone authorized or deputized to give such an order.
If either answer is not applicable, please re-word the question and re-submit.
The officer issued a lawful order. It was not lawful to take control of the vehicle. It would have to be a lawful taking for it to hold up in court.
The opposite prefix to "lawful" is "un-," so the opposite of "lawful" would be "unlawful."
It must be lawful. If it is not, you will be arrested immediately.
He was a lawful permanent resident.
The Lawful Cheater was created on 1925-07-17.
"Lawful husband" means a husband recognized by law.
No, it isn't lawful to fight on the Sabbath, let alone work then.
Outlawed means prohibited by law. Something which has not been outlawed is lawful.
Lawful is the adjective of law. "Lawful authority" It could also be Lawless. "Lawless authority"
The Legislature.
unlawful
unlawful