non-mandatory

non-mandatory — adjective

1. describing something that you are allowed to skip or refuse because no rule, law

1.形容詞B2
釋義

describing something that you are allowed to skip or refuse because no rule, law, or policy forces you to do it

例句

Christopher told the new hires that the Friday safety drill was non-mandatory.

non-mandatory + noun (drill)

Wearing a tie at the office is non-mandatory, but most engineers still do.

linking verb: is non-mandatory

同義詞
  • optional

    more common and less formal everyday word for the same idea

  • voluntary

    stresses that the person chooses to do it of their own will, often used for service or contributions

  • discretionary

    more formal; emphasises that someone in charge can decide whether to apply it

反義詞
  • mandatory

    required by a rule, law, or policy — the direct opposite

  • compulsory

    very close to mandatory; common in school and legal contexts

  • required

    plainer everyday opposite

文法句型

non-mandatory + noun

be non-mandatory

用法筆記

Most often used before a noun, especially with words like training, course, meeting, fee, or drill. It can also follow be, especially when contrasting with something that used to be required.

常見錯誤

❌Please come, the meeting is non-mandatory required.
✅Please come, the meeting is non-mandatory.
💡non-mandatory already means not required; don't add 'required' or 'optional' after it.