fiat (n.)

• appointment
• authority
• authorization
• brevet
• bull
• certification
• clearance
• countenance
• declaration
• decree
• dictum
• edict
• empowerment
• endorsement
• enfranchisement
• entitlement
• law
• ordinance
• proclamation
• pronouncement
• pronunciamento
• ratification
• rescript
• rule
• ruling
• sanction
• ukase
• warrant
• warranty