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English definition of “auxiliary verb”

auxiliary verb

noun [C]  /ɔɡˈzɪl·jə·ri ˈvɜrb/
grammar a verb that gives grammatical information that is not given by the main verb of a sentence: "Has" is an auxiliary verb in the sentence "She has finished her book."
(Definition of auxiliary verb noun from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definitions of “auxiliary verb” in other dictionaries

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