| Noun | 1. | active - chemical agent capable of activity Synonyms: active 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; "`The boy threw the ball' uses the active voice" Synonyms: active voice | |
| 3. | active - a person devoted to the active life Antonyms: contemplative - a person devoted to the contemplative life | |
| Adj. | 1. | active - tending to become more severe or wider in scope; "active tuberculosis" Antonyms: inactive - not progressing or increasing; or progressing slowly |
| 2. | active - engaged in or ready for military or naval operations; "on active duty"; "the platoon is combat-ready"; "review the fighting forces" Synonyms: combat-ready, fighting | |
| 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" | |
| 4. | active - taking part in an activity; "an active member of the club"; "he was politically active"; "the participating organizations" Synonyms: participating | |
| 5. | active - characterized by energetic activity; "an active toddler"; "active as a gazelle"; "an active man is a man of action" Antonyms: inactive - not active physically or mentally; "illness forced him to live an inactive life"; "dreamy and inactive by nature" | |
| 6. | active - exerting influence or producing an effect; "an active ingredient" Antonyms: inactive - not active or exerting influence | |
| 7. | active - full of activity or engaged in continuous activity; "an active seaport"; "an active bond market"; "an active account" Antonyms: inactive - lacking activity; lying idle or unused; "an inactive mine"; "inactive accounts"; "inactive machinery" | |
| 8. | active - in operation; "keep hope alive"; "the tradition was still alive"; "an active tradition" Synonyms: alive | |
| 9. | active - of the sun; characterized by a high level activity in sunspots and flares and radio emissions Antonyms: quiet - of the sun; characterized by a low level of surface phenomena like sun spots e.g. | |
| 10. | active - expressing that the subject of the sentence has the semantic function of actor: "Hemingway favors active constructions" Antonyms: passive - expressing thatthe subject of the sentence is the patient of the action denoted by the verb; "academics seem to favor passive sentences" | |
| 11. | active - expressing action rather than a state of being; used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water') Synonyms: dynamic Antonyms: stative - expressing existence or a state rather than an action; used of verbs (e.g. `be' or `own') and most participial adjectives | |
| 12. | active - (of e.g. volcanos) erupting or liable to erupt; "active volcanos" | |
| 13. | active - producing activity or change Antonyms: counteractive, antagonistic - opposing or neutralizing or mitigating an effect by contrary action | |
| 14. | active - engaged in full-time work; "active duty"; "though past retirement age he is still active in his profession" Antonyms: inactive - not engaged in full-time work; "inactive reserve" ; "an inactive member of the department" | |
| 15. | active - being in physical motion; "active fish in the aquarium" | |
| 16. | active - characterized by energetic bodily activity; "tennis is an active sport"; "a very physical dance performance" Synonyms: physical |
ACTIVE. The opposite, of passive. We say active debts, or debts due to us; passive debts are those we owe.
acting, active voice, activist, activistic, acute, aggressive, alive, animated, assiduous, at work, bouncing, bouncy, breezy, bubbly, bustling, catty, chipper, compliant, conforming, conscientious, constant, devoted, devout, diligent, driving, duteous, dutiful, ebullient, effective, effectual, effervescent, efficacious, efficient, enterprising, enthusiastic, expeditious, faithful, flexible, forceful, forcible, frisky, full, full of go, full of life, full of pep, functional, functioning, go-go, going, going on, graceful, hearty, hyperactive, impelling, impetuous, in exercise, in force, in hand, in motion, in operation, in play, in practice, in process, in the works, inaction, incisive, influential, intense, keen, kinetic, live, living, loyal, lusty, medio-passive, mercurial, meticulous, mettlesome, middle, middle voice, militant, mindful, mobile, motile, motivational, motive, motor, moving, observant, on foot, on the fire, on the go, on the move, ongoing, operating, operational, passive voice, peppy, perky, pert, physical, potent, powerful, practicing, prompt, propellant, propelling, punctilious, punctual, quicksilver, ready, reflexive, regardful, robust, running, rushing, scrupulous, smacking, snappy, spanking, spirited, spry, stirring, strenuous, strong, take-charge, take-over, transitional, traveling, trenchant, true, vibrant, vivid, voice, wide-awake, zestful, zesty, zingy, zippy