It means no law exists that will hinder the course of action. For instance, between two parties settling a debt, no law exists (or should exist) to hinder them from carrying it out.
No, it isn't lawful to fight on the Sabbath, let alone work then.
lawful monarchs should be restored.
Written permission from lawful authority.
Read article 91 of the UCMJ manual
It means that - in their opinion - a certain war is justified. war can be justified according to agreed conditions, must be declared by a lawful authority fought to prevent worse catastrophe innocent protected
Something in the way, an impediment to progress.
"Lawful husband" means a husband recognized by law.
Outlawed means prohibited by law. Something which has not been outlawed is lawful.
legal
It means be lawful.
An absolute impediment a legal impediment which prevents a person from marrying, but does not require punishment or annulment.
There were impediments in the work done. This is a sentence containing the word impediment.
He lisped because of a speech impediment. The impediment prevented them from making it through the ditch. The lack of funds was the impediment that ended the research.
John's stuttering is an impediment to his speaking.
If Jim has a lisp, then he has a speech impediment.
If a car stops in the middle of the road, it is an impediment to the drivers behind it. I speak with a lisp, therefore I have a speech impediment
War is one of the greatest impediments to human progress. Lack of confidence is an impediment to success. He suffers from a speech impediment: