/ ˈfæbjələs; NAmE / adjective
1.
( informal ) extremely good :
a fabulous performance
Jane is a fabulous cook.
➡ note at great
2.
( formal ) very great :
fabulous wealth / riches / beauty
3.
[ only before noun ] ( literary ) appearing in fables :
fabulous beasts
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WORD ORIGIN
late Middle English (in the sense known through fable ): from French fabuleux or Latin fabulosus celebrated in fable, from fabula story, from fari speak.