If "edict" means a formal order or decree:
* Revocation: Means the act of officially canceling or withdrawing the edict.
* Abrogation: Similar to revocation but can also imply the act of making the edict null and void.
* Repeal: Specifically used for laws, but can also apply to edicts.
* Countermand: To cancel or revoke a previous order, particularly a military order.
If "edict" implies an authoritarian or oppressive order:
* Freedom: The opposite of being bound by a restrictive order.
* Liberty: Similar to freedom, but with a greater emphasis on self-determination.
* Autonomy: The ability to govern oneself independently of any edict.
* Democracy: A system of government based on the will of the people, which can be seen as the opposite of an edict imposed from above.
Other possible antonyms:
* Suggestion: A less forceful way of conveying a request or idea.
* Request: A polite way of asking for something.
* Advice: A recommendation, not a command.
The best antonym will depend on the specific context and the nuance you wish to convey.