mandatory

Từ điển Oxford Advanced Learner 8th

man·da·tory [mandatory mandatories] BrE [ˈmændətəri] BrE [mænˈdeɪtəri] NAmE [ˈmændətɔːri] adjective (formal)
required by law
Syn: ↑compulsory
•The offence carries a mandatory life sentence.
•~ (for sb) (to do sth) It is mandatory for blood banks to test all donated blood for the virus.

Word Origin:
late 15th cent.: from late Latin mandatorius, from Latin mandatum ‘something commanded’.

• Từ đồng nghĩa / Synonyms:
  compulsory, required, mandate, mandatary