By the Cambridge Dictionary
To legally forbid or stop something by order of a court
Enjoin also means to order or strongly encourage someone to do something
By the Oxford Dictionary
- Instruct or urge (someone) to do something
- Law Prohibit someone from performing by issuing an injunction
So basically, "He is enjoined to stop" can mean either way.
Best Answer
Enjoin: : the common usage is from the old French "enjoindre", impose:
The other meaning is only of legal usage and is related to an injunction:
Enjoin (v.): etymology:.