/ Dictionary / Index F fantabulous: Meaning and Definition of Find definitions for: fan•tab•u•lous Pronunciation: (fan-tab'yu-lus), [key] — adj. Slang. extremely fine or desirable; excellent; wonderful. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fantabulous (Thesaurus) fan roof fantail Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language