fabulous vs mythical

fabulous and mythical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
fabulous	No	Yes	No	No
mythical	No	Yes	No	No

As adjectives, fabulous and mythical are synonyms defined as:

fabulous and mythical: based on or told of in traditional stories; lacking factual basis or historical validity

Other synonyms of fabulous include mythic, mythologic, mythological.

fabulous (adjective)	mythical (adjective)
barely credible	based on or told of in traditional stories; lacking factual basis or historical validity
extremely pleasing
based on or told of in traditional stories; lacking factual basis or historical validity