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.
Quick in physical movement; of an agile and vigorous body; nimble; as, an active child or animal.
In action; actually proceeding; working; in force; - opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an active volcano.
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.
Requiring or implying action or exertion; - opposed to sedentary or to tranquil; as, active employment or service; active scenes.
Given to action rather than contemplation; practical; operative; - opposed to speculative or theoretical; as, an active rather than a speculative statesman.
Brisk; lively; as, an active demand for corn.
Implying or producing rapid action; as, an active disease; an active remedy.
Applied to a form of the verb; - opposed to passive. See Active voice, under Voice.
Of or pertaining to dynamics; belonging to energy or power; characterized by energy or production of force.
Relating to physical forces, effects, or laws; as, dynamical geology.