1. (adj.)active engaged in action or activity; characterized by energetic work, motion, etc.: an active life.
2. active being in existence, progress, or motion: active hostilities.
3. active marked by or disposed to direct involvement or practical action: active support.
4. active involving physical action: active sports.
5. active agile; nimble.
6. active characterized by current activity, participation, or use: an active member; an active account.
7. active characterized by considerable or vigorous activity: an active market in wheat.
8. active capable of exerting influence active treason.
9. active effective active ingredients.
10. active of, pertaining to, or being a voice, verb form, or construction having a subject represented as performing or causing the action expressed by the verb, as the verb form write in I write letters every day
11. active (of a verb) expressing an action rather than a state; nonstative.
12. active requiring or giving rise to action; practical.
13. active (of a volcano) in eruption or liable to erupt; not dormant or extinct.
14. active (of a fault) experiencing recurrent seismic movement.
15. active acting as a source of electrical energy, as a generator.
16. active capable of amplifying or converting voltages or currents, as a transistor or diode.
17. active (of military personnel) on active duty.
18. (n.)active the active voice.
19. active a form or construction in the active voice.
Etymology: (1300–50; < MF < L āctīvus <
Definition of 'active'
Princeton's WordNet
1. (noun)active agent, active chemical agent capable of activity
2. (noun)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"
3. (adj)active a person who is a participating member of an organization "the club issues a list of members, both the actives and the retirees"
4. (adj)active tending to become more severe or wider in scope "active tuberculosis"
5. (adj)active, combat-ready, fighting(a) engaged in or ready for military or naval operations "on active duty"; "the platoon is combat-ready"; "review the fighting forces"
6. (adj)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"
7. (adj)active, participating taking part in an activity "an active member of the club"; "he was politically active"; "the participating organizations"
8. (adj)active characterized by energetic activity "an active toddler"; "active as a gazelle"; "an active man is a man of action"
9. (adj)active exerting influence or producing a change or effect "an active ingredient"
10. (adj)active full of activity or engaged in continuous activity "an active seaport"; "an active bond market"; "an active account"
11. (adj)active, alive(p) in operation "keep hope alive"; "the tradition was still alive"; "an active tradition"
12. (adj)active (of the sun) characterized by an increased occurrence of sunspots and flares and radio emissions
13. (adj)active expressing that the subject of the sentence has the semantic function of actor: "Hemingway favors active constructions"
14. (adj)active, dynamic (used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water')) expressing action rather than a state of being
15. (adj)active (of e.g. volcanos) capable of erupting
16. (adj)active (of e.g. volcanos) erupting or liable to erupt "active volcanos"
17. (adj)active engaged in full-time work "active duty"; "though past retirement age he is still active in his profession"
5. (noun)active the active (voice) ≠ passive Change these sentences into the active.
Definition of 'active'
Webster Dictionary
1. (adj)active 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. (adj)active quick in physical movement; of an agile and vigorous body; nimble; as, an activechild or animal
3. (adj)active in action; actually proceeding; working; in force; -- opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an active volcano
4. (adj)active 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. (adj)active requiring or implying action or exertion; -- opposed to sedentary or to tranquil; as, active employment or service; active scenes
6. (adj)active given to action rather than contemplation; practical; operative; -- opposed to speculative or theoretical; as, an active rather than a speculative statesman
7. (adj)active brisk; lively; as, an active demand for corn
8. (adj)active implying or producing rapid action; as, an active disease; an active remedy
9. (adj)active applied to a form of the verb; -- opposed to passive. See Active voice, under Voice.
10. (adj)active applied to verbs which assert that the subject acts upon or affects something else; transitive
Definitions of active 
Afrikaans: aktief
Arabic: نَشِيط ، مُفْعَم بِالحَيا
Bulgarian: енергичен
Brazilian: ativo
Czech: aktivní, čilý
German: aktiv
Danish: aktiv
Greek: δραστήριος
Spanish: activo
Estonian: tegus
Farsi: پر جنب و جوش
Finnish: eloisa
French: actif
Hebrew: פָּעִיל, פְּעַלתָּן
Hindi: सक्रिय
Croatian: aktivan
Hungarian: aktív
Indonesian: giat
Icelandic: virkur
Italian: attivo
Japanese: 活動的な
Korean: 활동적인
Lithuanian: veiklus, aktyvus
Latvian: darbīgs; aktīvs
Malay: cergas
Dutch: actief
Norwegian: aktiv, energisk, virksom
Polish: czynny, aktywny
Persian: پر جنب و جوش
Pashto: له جنبځخه ډك
Portuguese: activo
Romanian: activ, energic
Russian: бодрый
Slovak: aktívny
Slovenian: dejaven
Serbian: aktivan
Swedish: aktiv
Thai: คล่องแคล่ว
Turkish: faal, aktif, enerjik
Taiwanese: 活躍的
Ukrainian: активний, діяльний
Urdu: سر گرم
Vietnamese: nhanh nhẹn
Chinese: 活跃的，有活动力的
