1. a strong, irresistible urge to do something
2. the use of force or pressure to make someone do something

Examples

• She felt a compulsion to check her phone every few minutes.
• His compulsion to wash his hands repeatedly interfered with daily life.
• The contract was signed under compulsion, not by free will.
• There is no compulsion to attend the meeting.
• He had a strange compulsion to count everything twice.
• The law was enforced through compulsion rather than persuasion.
• Her compulsion for perfectionism made her work late every night.