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English definition of “active”

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active

adjective  /ˈæk·tɪv/ us  

active adjective (DOING SOMETHING)

doing something as you usually do, or being able to do something physically or mentally: He was still an active runner at 55. She’s active in state politics (= involved in it). She intends to remain politically active. His National Guard unit was put on active duty (= made part of the regular fighting force). An active volcano is one that might begin to throw out hot gases, liquid, or rocks at any time.

active adjective (GRAMMAR)

grammar [not gradable] describing a verb or sentence in which the subject is the person or thing that does what is stated: In "Alex gave me a gift," the verb "give" is active, and in "I was given a gift by Alex," "give" is passive.
actively
adverb  /ˈæk·tɪv·li/ us  
He isn’t actively involved in the day-to-day management of the business anymore.
(Definition of active from the Cambridge Academic Content Dictionary © Cambridge University Press)
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