Webster's Revised Unabridged Dictionary · 1913

Decretory

Decretory , adjective

[Latin decretorius, from decretum. See Decree.]

1.
Established by a decree; definitive; settled.
The decretory rigors of a condemning sentence. — South
2.
Serving to determine; critical.
The critical or decretory days. — Sir T. Browne