Collins COBUILD Advanced Learner's English Dictionary - compulsory

If something is compulsory, you must do it or accept it, because it is the law or because someone in a position of authority says you must. In East Germany learning Russian was compulsory... Many young men are trying to get away from compulsory military conscription. = mandatory ADJ • compulsorily Five of the company’s senior managers have been made compulsorily redundant. ADV: ADV with v, ADV adj