The question itself was deleted by the community, and thus your answer was removed, as it makes little sense to have answers without the question.
The original text of your post, in case you want it:
The word fantabulous exist. But, it is not indicated in many dictionaries (even my auto-spell check doesn't show such a word).
I'm using Word Web - a pocket dictionary. It says - an informal : 'very good; of the highest quality'. After skimming through several sources, it seems that the word was originally blended from fantastic and fabulous in the 1950s.
My other references which include American Oxford Dictionary and Chambers dictionary provide the same synonym - "Superb, Excellent, Marvelous, Wonderful", etc.