One possibility is the word legal.
rely or truth
lawfullikablelinkablelolligagginglovablelovelovinglust
The word is lawful.
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.
Envy Is A 4-Letter Word
Salt is a 4 letter word for seasoning.
4 letter word for final
4 letter word for drum is "Dhol".
Prudent is an example.
This could be lawful.
this
Outlawed means prohibited by law. Something which has not been outlawed is lawful.