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Definition of “authority” - Learner’s Dictionary

authority

noun     /ɔːˈθɒrəti/
POWER [U] B2 the official power to make decisions or to control other people: a position of authority [+ to do sth] The investigators have the authority to examine all the company's records. We need the support of someone in authority.Powerful people and dictators
OFFICIAL GROUP [C] an official group or government department with power to control particular public services: the local housing authorityPeople in charge of or controlling other peopleBosses, managers and directorsGovernment departments and organizations
QUALITY [U] the quality of being confident and being able to control people: She has an air of authority.Confidence and self-assuranceShowing arrogance and conceit
an authority on sth someone who has a lot of knowledge about a particular subject: She is an authority on seventeenth-century English literature. →  See also local authority Experts and specialists
(Definition of authority from the Cambridge Learners Dictionary © Cambridge University Press)
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