decretive

/dɪˈkriːtɪv/
adjective
  1. Having the power or authority to issue decrees; relating to the making of official orders.
    • The committee's decretive role allowed it to set binding rules for the industry.
    • The decretive power of the emperor was absolute in ancient Rome.
    • In some governments, the executive branch has decretive authority in emergencies.
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