Meaning & use
compulsory
Required by law or a rule; something that must be done.
See it in a sentence
Wearing a seatbelt is compulsory for all passengers in the car.
The university made the introductory statistics course compulsory for every science major.
A note on using this word
Compulsory is common in formal or institutional contexts like education and law, while mandatory is more general and used in everyday speech too.
Words with a similar meaning
mandatoryobligatory
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
optionalvoluntary
Make it your own
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