fabulous vs fab

fabulous and fab both are adjectives.

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

As adjectives, fabulous and fab are synonyms defined as:

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