What is the adverb for enact?

There isn't a single, perfect adverb for "enact." It depends on what you want to emphasize. Here are a few options with different meanings:

General ways to enact:

* effectively: "The law was effectively enacted."

* successfully: "The plan was successfully enacted."

* immediately: "The new rules were immediately enacted."

* quickly: "The decision was quickly enacted."

* formally: "The legislation was formally enacted."

Emphasis on the method of enactment:

* legislatively: "The bill was legislatively enacted."

* judicially: "The court order was judicially enacted."

* unanimously: "The proposal was unanimously enacted."

Emphasis on the effect of enactment:

* forcefully: "The dictator forcefully enacted his will."

* harshly: "The punishments were harshly enacted."

* strictly: "The rules were strictly enacted."

The best adverb will depend on the specific context of your sentence.