authority

[1]	power , jurisdiction , authorisation , potency , dominion , right , dominance , say-so , control , prerogative , authorization , hegemony
[2]	word , testimony , evidence , (Colloq) say-so
[3]	expert , specialist , scholar , sage , judge , arbiter
[4]	authorities , assurance , self-assurance , government , establishment , confidence , self-confidence , officials , officialdom , sureness , powers that be , police
[5]	agency , federal agency , government agency , bureau , office
[6]	authorisation , sanction