authority

Official permission or approval.

“authority for the program was renewed several times”

An administrative unit of government.

Freedom from doubt; belief in yourself and your abilities.

“she spoke with authority”

The power or right to give orders or make decisions.

“he has the authority to issue warrants”

An authoritative written work.

“this book is the final authority on the life of Milton”

An expert whose views are taken as definitive.

“he is an authority on corporate law”

(usually plural) persons who exercise (administrative) control over others.