authority
US /əˈθɔːr.ə.t̬i/
UK /əˈθɔːr.ə.t̬i/
1.
the power or right to give orders, make decisions, and enforce obedience
:
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The police have the authority to arrest criminals.
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She has no authority over me.
2.
a person or organization having political or administrative power and control
:
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The local authority is responsible for waste collection.
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You need to get permission from the relevant authority.
3.
the power to influence others, especially because of one's recognized knowledge or expertise
:
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He speaks with great authority on the subject of ancient history.
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Her research has established her as an authority in the field.