compulsory
adjectiveUK /kəmˈpʌlsəri/
US /kəmˈpʌlsəri/
Something compulsory is something you must do because it is a rule.
Wearing a helmet is compulsory when you ride a bike.
RELATED WORDS
OTHER MEANINGS
2. Required by law or a rule.
School attendance is compulsory for all children.
3. Having the power to force someone to do something.
The coach's compulsory training sessions left no time for rest.
4. In sports, a required move or routine.
The gymnast practiced her compulsory routine before the competition.