Dictionary.com
Thesaurus.com
Synonyms

fabulous

American  
[fab-yuh-luhs] / ˈfæb yə ləs /

adjective

  1. Informal. exceptionally good or unusual; wonderful; superb.

    a fabulous bargain;

    a fabulous new house.

  2. almost impossible to believe; incredible.

    Her fabulous story about surviving alone on a desert island for three months was riveting—and it was all true!

  3. told about in fables; purely imaginary or known about only through myths or legends.

    the fabulous exploits of Hercules.

    Synonyms:
    fictional, fictitious, fabled

fabulous British  
/ ˈfæbjʊləs /

adjective

  1. almost unbelievable; astounding; legendary

    fabulous wealth

  2. informal extremely good

    a fabulous time at the party

  3. of, relating to, or based upon fable

    a fabulous beast

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • fabulously adverb
  • fabulousness noun
  • unfabulous adjective
  • unfabulously adverb

Etymology

Origin of fabulous

First recorded in 1540–50; from Latin fābulōsus, equivalent to fābul(a) “a story, tale” + -ōsus adjective suffix; fable, -ous