1. in a way that is required by law or rule; not by choice

Examples

• All students must compulsorily attend the safety briefing.
• The new regulations require companies to compulsorily report their emissions.
• Military service is compulsorily imposed on all citizens over 18.
• The medication must be compulsorily administered to prevent the outbreak.
• Workers were compulsorily relocated when the factory closed.
• The course is compulsorily included in the curriculum.