Definition of activeactive - adj. characterized by energetic activity; engaged in full-time work; full of activity or engaged in continuous activity; tending to become more severe or wider in scope; disposed to take action or effectuate change; (of e.g. volcanos) erupting or liable to erupt; (of e.g. volcanos) capable of erupting; expressing action rather than a state of being; used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water'); expressing that the subject of the sentence has the semantic function of actor: "Hemingway favors active constructions"; exerting influence or producing a change or effect; of the sun; characterized by a high level activity in sunspots and flares and radio emissions; in operation; taking part in an activity; engaged in or ready for military or naval operations; noun a person devoted to the active life; the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb; chemical agent capable of activity.
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