Active

a. [ F. actif, L. activus, fr. agere to act. ] 1. 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. [ 1913 Webster ]

2. Quick in physical movement; of an agile and vigorous body; nimble; as, an active child or animal. [ 1913 Webster ]

Active and nervous was his gait. Wordsworth. [ 1913 Webster ]

3. In action; actually proceeding; working; in force; -- opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an active volcano. [ 1913 Webster ]

4. 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. [ 1913 Webster ]

5. Requiring or implying action or exertion; -- opposed to sedentary or to tranquil; as, active employment or service; active scenes. [ 1913 Webster ]

6. Given to action rather than contemplation; practical; operative; -- opposed to speculative or theoretical; as, an active rather than a speculative statesman. [ 1913 Webster ]

7. Brisk; lively; as, an active demand for corn. [ 1913 Webster ]

8. Implying or producing rapid action; as, an active disease; an active remedy. [ 1913 Webster ]

9. (Gram.) (a) Applied to a form of the verb; -- opposed to passive. See Active voice, under Voice. (b) Applied to verbs which assert that the subject acts upon or affects something else; transitive. (c) Applied to all verbs that express action as distinct from mere existence or state. [ 1913 Webster ]

Active capital,
Active wealth, money, or property that may readily be converted into money. [ 1913 Webster ]

Syn. -- Agile; alert; brisk; vigorous; nimble; lively; quick; sprightly; prompt; energetic. [ 1913 Webster ]