Definition of active noun from the Oxford Advanced Learner's Dictionary

 

active

 noun
noun
BrE BrE//ˈæktɪv//
 
; NAmE NAmE//ˈæktɪv//
 
Grammar
 
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(also ˌactive ˈvoice) [singular] the form of a verb in which the subject is the person or thing that performs the action In ‘She drove the car’, ‘she’ is the subject and the verb ‘drove’ is in the active. compare passive See related entries: Grammar Word Origin Middle English (in the sense ‘preferring action to contemplation’): from Latin activus, from act- ‘done’, from the verb agere.
See the Oxford Advanced American Dictionary entry: active