1. to instruct or urge someone to do something, often with authority or emphasis
2. to forbid or prohibit someone from doing something, especially by legal order
Usage: legal/formal

Examples

• The coach enjoined the players to work harder during practice.
• The teacher enjoined her students to complete their homework on time.
• The court enjoined the company from using the patented technology.
• Parents often enjoin their children to be honest and respectful.
• The judge enjoined the defendant from contacting the witness.
• The principal enjoined all students to follow the new safety rules.