nonmandatory
/nɑnˈmændəˌtɔri/
adjective
- Not required or obligatory; optional.
- The company offers nonmandatory training courses for employees who want to learn new skills.
- Attendance at the Friday seminar is nonmandatory, but many people go.
- Wearing a tie is nonmandatory at this office, so most people dress casually.
Antonyms