English dictionary

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English adjective: active

1. active tending to become more severe or wider in scope

SamplesActive tuberculosis.


Domain categorypathology


2. active engaged in or ready for military or naval operations

SamplesOn active duty.
The platoon is combat-ready.
Review the fighting forces.

Synonymscombat-ready, fighting


Domain categoryarmed forces, armed services, military, military machine, war machine

Antonymsnonoperational, inactive

3. active disposed to take action or effectuate change

SamplesA director who takes an active interest in corporate operations.
An active antagonism.
He was active in drawing attention to their grievances.

Similaractivist, activistic, hands-on, proactive

Attributeactiveness, activity

Antonymspassive, inactive

4. active taking part in an activity

SamplesAn active member of the club.
He was politically active.
The participating organizations.




5. active characterized by energetic activity

SamplesAn active toddler.
Active as a gazelle.
An active man is a man of action.

Similarabout, acrobatic, agile, astir, athletic, gymnastic, hot, hyperactive, nimble, on the go, overactive, quick, sporty, spry

See alsoenergetic, lively

Attributeactiveness, activity


6. active exerting influence or producing a change or effect

SamplesAn active ingredient.

Similaractivated, counteractive, surface-active


7. active full of activity or engaged in continuous activity

SamplesAn active seaport.
An active bond market.
An active account.

Similarbrisk, bustling, busy, going, open, springy


8. active in operation

SamplesKeep hope alive.
The tradition was still alive.
An active tradition.


Similarexistent, existing


9. active (of the sun) characterized by an increased occurrence of sunspots and flares and radio emissions

Domain categoryastronomy, uranology


10. active expressing that the subject of the sentence has the semantic function of actor:

SamplesHemingway favors active constructions.

Domain categorygrammar


11. active (used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water')) expressing action rather than a state of being


Domain categorygrammar


12. active (of e.g. volcanos) capable of erupting

Similaralive, live

See alsolive


13. active (of e.g. volcanos) erupting or liable to erupt

SamplesActive volcanos.


Attributeaction, activeness, activity

Domain categoryvent, volcano

Antonymsdormant, inactive

14. active engaged in full-time work

SamplesActive duty.
Though past retirement age he is still active in his profession.



English noun: active

1. active (substance) chemical agent capable of activity

Synonymsactive agent

Broader (hypernym)chemical agent

2. 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

Samples`The boy threw the ball' uses the active voice.

Synonymsactive voice

Broader (hypernym)voice

Antonymspassive, passive voice

3. active (person) a person who is a participating member of an organization

SamplesThe club issues a list of members, both the actives and the retirees.

Broader (hypernym)individual, mortal, person, somebody, someone, soul

Based on WordNet 3.0 copyright © Princeton University.
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