1. Noun.  (uncountable, grammar) The grammatical mood expressing an order (see jussive). In English, the imperative form of a verb is the same as that of the bare infinitive.
  2. Noun.  (countable, grammar) A verb in imperative mood.
  3. Noun.  (countable) An essential action, a must: something which is imperative.
  4. Adjective.  essential.
  5. Adjective.  (computing theory) Having a semantics that incorporates mutable variables.

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This entry was last updated on RefTopia from its source on 3/20/2012.