(n.) The act of giving authority or legal power; establishment by authority; sanction or warrant.

John Hancock OK acceptance accession accredit acme advance affidavit affirmance affirmation agency agentship aid allow allowance anointing anointment appointment approbation approval approve arrogation assignment assist assumption attestation authentication authority be-all and end-all bill of health blue ribbon brevet care certificate certificate of proficiency certification championship charge clearance command commission commissioning commitment confirmation consecration consent consignment control coronation countenance countersignature credential cure delegated authority delegation deposition deputation devolution devolvement diploma directorship dominion effectiveness election embassy empower empowerment enable enabling enactment endorse endorsement enfranchisement entitlement entrusting entrustment errand executorship exequatur facilitate factorship fiat first place first prize forward full power further go-ahead green light headship hegemony height help highest imperium imprimatur influence jurisdiction kingship leadership leave legalization legation legislation legitimate succession legitimatization let license lieutenancy lordship management mandate mastership mastery maximum mission most navicert ne plus ultra new high nod notarization notarized statement note office okay palms paramountcy permission permit plenipotentiary power power power of attorney power to act presidency primacy procuration promote proxy purview qualify ratification record regency regentship responsibility rubber stamp rule sanction say seal seizure sheepskin sigil signature signet sovereignty stamp stamp of approval subscription subserve succession sufferance support supremacy sway sworn statement taking over task testamur testimonial the nod ticket top spot trust trusteeship usurpation validation vest vicarious authority visa vise voucher warrant warranty witness zenith