See decree in Webster's New World Roget's A-Z Thesaurus II
noun
A principle governing affairs within or among political units:
canon, edict, institute, law, ordinance, precept, prescription, regulation, rule. See lawAn authoritative or official decision, especially one made by a court:
determination, edict, judgment, pronouncement, ruling. See law
verb
To set forth expressly and authoritatively:
dictate, fix, impose, lay down, ordain, prescribe. Idioms: call the shots (or tune), lay it on the line. See overTo make a decision about (a controversy or dispute, for example) after deliberation, as in a court of law:
adjudge, adjudicate, arbitrate, decide, determine, judge, referee, rule, umpire. See decide, law
Learn more about decree