Aficionado , ascendancy, authorization, acquiescence, officialdom, acceptance, ace, and adept are synonyms for authority; anarchy and insignificance are antonyms of authority. On this page, you will find 134 another word for authority.
1. power
2. authorization
3. authorization
4. officials
5. influence
6. expert
She speaks with great authority.
The teacher has disciplinary authority.
He questioned the officer's authority.
They acted under his authority.