Synonyms of 'authority'
Authority is never without hate– Ion]
I am a man under authority, having soldiers under me; and I say to this man, Go, and he goeth; and to another, Come, and he cometh; and to my servant, Do this, and he doeth it[Bible: St. Matthew]
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If you describe someone such as a sports player as an ace, you mean that they are very good at what they do.
former motor-racing ace Stirling Moss
You can refer to a country's government as the administration; used especially in the United States.
He served in posts in both the Ford and Carter administrations.
If you win someone's approval for something that you ask for or suggest, they agree to it.
The proposed modifications met with widespread approval.
the go-ahead (informal)
the green light
O.K. or okay (informal)
Thesaurus for authority from the Collins English Thesaurus
The authorities are the people who have the power to make decisions and to make sure that laws are obeyed .