- 1that must be done because of a law or a rule synonym mandatory
- 2 It is compulsory for all motorcyclists to wear helmets. English is a compulsory subject at this level. compulsory education/schooling compulsory lay-offs opposite voluntary
compulsorilyjump to other results
NAmE//kəmˈpʌlsərəli//adverb Over 600 workers were compulsorily laid off.