What does "imperative" mean?

Imperative: Not to be avoided or evaded; obligatory; binding; compulsory; as, an imperative duty or order.

Additional senses

  1. 2.(Gram.) Expressive of commund, entreaty, advice, or exhortation; as, the imperative mood.
  2. 3.The imperative mood; also, a verb in the imperative mood.

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