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Adjective active has 16 senses
  1. active - tending to become more severe or wider in scope; "active tuberculosis"
    inactive, arrested, in remission, dead-end, indolent, latent, quiescent
  2. active, combat-ready, fighting - engaged in or ready for military or naval operations; "on active duty"; "the platoon is combat-ready"; "review the fighting forces"
    Antonym: nonoperational (indirect, via operational)
  3. active - disposed to take action or effectuate change; "a director who takes an active interest in corporate operations"; "an active antagonism"; "he was active in drawing attention to their grievances"
    passive, inactive, hands-off, resistless, supine, unresisting
  4. active, participating - taking part in an activity; "an active member of the club"; "he was politically active"; "the participating organizations"
    Antonym: uninvolved (indirect, via involved)
  5. active - characterized by energetic activity; "an active toddler"; "active as a gazelle"; "an active man is a man of action"
    inactive, desk-bound, deskbound, dormant, hypoactive, underactive, inert, sluggish, torpid, sedentary
  6. active - exerting influence or producing an effect; "an active ingredient"
    inactive, quiescent
  7. active - full of activity or engaged in continuous activity; "an active seaport"; "an active bond market"; "an active account"
    inactive, closed, dark, dead, dull, slow, sluggish, idle, unused, strikebound
  8. active, alive - in operation; "keep hope alive"; "the tradition was still alive"; "an active tradition"
    Antonym: nonexistent (indirect, via existent)
  9. active - of the sun; characterized by a high level activity in sunspots and flares and radio emissions
  10. active - expressing that the subject of the sentence has the semantic function of actor: "Hemingway favors active constructions"
  11. active, dynamic - expressing action rather than a state of being; used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water')
    Antonym: stative
  12. active - (of e.g. volcanos) erupting or liable to erupt; "active volcanos"
    dormant, quiescent, extinct, inactive, dead
  13. active - producing activity or change
    counteractive, antagonistic, antacid, antidotal, antiphlogistic, countervailing, offsetting, compensatory, compensative, opposing
  14. active - engaged in full-time work; "active duty"; "though past retirement age he is still active in his profession"
    inactive, off, off duty, off-duty, on leave, retired
  15. active - being in physical motion; "active fish in the aquarium"
    nonmoving, unmoving (indirect, via moving)
  16. active, physical - characterized by energetic bodily activity; "tennis is an active sport"; "a very physical dance performance"
    Antonyms: lethargic, unergetic (indirect, via energetic)
Noun active has 3 senses
  1. active agent, active - chemical agent capable of activity
    --1 is a kind of chemical agent
  2. active voice, active - the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb; "`The boy threw the ball' uses the active voice"
    --2 is a kind of voice
  3. active - a person devoted to the active life
    --3 is a kind of
    person, individual, someone, somebody, mortal, human, soul
    Antonyms: contemplative
activates activating activating agent activation activation energy activator activators active-duty active active active agent active air defense active application active asphalt active at night active birth active cell

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