What suffix can you use for adverb ENTIRELY to make it an adverb?

The word "entirely" is already an adverb. It describes how something is done or to what extent.

You don't need to add any suffixes to make it an adverb.

For example:

* "He entirely forgot about the meeting." ("Entirely" describes how he forgot.)

* "She was entirely satisfied with her new job." ("Entirely" describes the extent of her satisfaction.)