decree (n.)
early 14c., from Old French decre, variant of decret (12c., Modern French décret), from Latin decretum, neuter of decretus, past participle of decernere "to decree, decide, pronounce a decision," from de- (see de-) + cernere "to separate" (see crisis).
decree (v.)
late 14c., from decree (n.). Related: Decreed; decreeing.