Synonyms for Authorization (same or very similar meaning)
WordNet sense 1 (a document giving an official instruction or command):
mandate, authorisation
WordNet sense 2 (the power or right to give orders or make decisions):
authority, dominance, potency, say-so
WordNet sense 3 (official permission or approval):
sanction
WordNet sense 4 (the act of conferring legality or sanction or formal warrant):
empowerment
From the ODE community, based on WordNet
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