| Main Entry: | mandatory |
| Part of Speech: | adjective |
| Definition: | required, necessary |
Synonyms: |
binding, commanding, compelling, compulsatory, compulsory, de rigueur, essential, forced, imperative, imperious, indispensable, involuntary, irremissible, needful, obligatory, requisite |
Antonyms: |
optional, unnecessary, voluntary |