adj.
Compulsory is used with these nouns: ↑ attendance , ↑ conscription , ↑ education , ↑ insurance , ↑ licence , ↑ liquidation , ↑ module , ↑ purchase , ↑ reading , ↑ redundancy , ↑ registration , ↑ repatriation , ↑ retirement , ↑ scheme , ↑ schooling , ↑ subject , ↑ vaccination