1. ordered or commanded someone to do something, often with authority or urgency
2. prohibited or forbade someone from doing something by legal order or court injunction
Usage: legal/formal

Examples

• The teacher enjoined the students to complete their homework before class.
• The court enjoined the company from using the trademarked name.
• He enjoined strict silence on all members of the committee.
• The judge enjoined the defendant from contacting the witness.
• The principal enjoined good behavior during the assembly.
• The contract enjoined both parties to fulfill their obligations.