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Compulsory

/kəmˈpʌlsəri/

Something that must be done or is required by law or rules.

Synonyms:

Uniforms are compulsory at this school.Voting is compulsory in some countries.

From late Middle English (in the sense using force): from medieval Latin compulsorius, from compuls- ‘driven, forced’, from the verb compellere.

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Often

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