Synonyms of 'authorization'
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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)
Authority is official permission to do something.
He must first be given authority from his own superiors.
Thesaurus for authorization from the Collins English Thesaurus
an authorizing or being authorized