Definition of "fabulous"

Of or relating to fable, myth or legend.  examples

Characteristic of fables; marvelous, extraordinary, incredible.  quotations  examples

Fictional or not believable; made up.  examples

(obsolete) Known for telling fables or falsehoods; unreliable.

(slang) Very good; outstanding, wonderful.

(slang) Camp, effeminate.

(slang) Fashionable, glamorous.