1. Adjective.  Having the power or quality of acting; causing change; communicating action or motion; acting; — opposed to passive, that receives; as, certain active principles; the powers of the mind.
  2. Adjective.  Quick in physical movement; of an agile and vigorous body; nimble; as, an active child or animal.
  3. Adjective.  In action; actually proceeding; working; in force; — opposed to quiescent, dormant, or extinct.
  4. Adjective.  Given to action; constantly engaged in action; energetic; diligent; busy; — opposed to dull, sluggish, indolent, or inert; as, an active man of business; active mind; active zeal.
  5. Adjective.  Requiring or implying action or exertion; — opposed to sedentary or to tranquil; as, active employment or service; active scenes.
  6. Adjective.  Given to action rather than contemplation; practical; operative; — opposed to speculative or theoretical; as, an active rather than a speculative statesman.
  7. Adjective.  Brisk; lively; as, an active demand for corn.
  8. Adjective.  Implying or producing rapid action.
  9. Adjective.  (grammar) Applied to a form of the verb; — opposed to passive. See active voice.
  10. Adjective.  (grammar) Applied to verbs which assert that the subject acts upon or affects something else; transitive.
  11. Adjective.  (grammar) Applied to all verbs that express action as distinct from mere existence or state.
  12. Adjective.  (italbrac, gay sexual slang) (italbrac, of a homosexual man) enjoying a role in anal sex in which he penetrates, rather than being penetrated by his partner.
  13. Noun.  A person or thing that is acting or capable of acting.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

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