marvelously vs wondrously

marvelously and wondrously both are adverbs.

Word	Noun	Adjective	Verb	Adverb
marvelously	No	No	No	Yes
wondrously	No	No	No	Yes

As adverbs, marvelously and wondrously are synonyms defined as:

Other synonyms of marvelously include marvellously, superbly, terrifically, toppingly, wonderfully, wondrous.

marvelously (adverb)	wondrously (adverb)
(used as an intensifier) excellently	(used as an intensifier) excellently