IPA: /dɪˈkrɛtəri/
KK: /dɪˈkrɛtəri/
Connected to or having the power of an official order or decision.
The decretory nature of the ruling meant that it had to be followed by all parties involved.
Decretory → It is formed from "decretum" (from Latin, meaning a decree or decision) and the suffix "-ory" (meaning relating to or characterized by). The word "decretory" refers to something that is related to or characterized by a decree or decision.
Think of a decree ('decretum') that relates to something — that's why 'decretory' means relating to a decree.