adj.
- extraordinary, especially extraordinarily large:
his fabulous wealth.
▸informal very good.
- mythical; imaginary.
Derivative
- fabulosity n.
- fabulously adv.
- fabulousness n.
Etymology
ME (in the sense ‘known through fable’): from Fr. fabuleux or L. fabulosus ‘celebrated in fable’, from fabula (see fable).