The story
- Proto-Indo-European*bʰeh₂-
- Proto-Indo-European*bʰéh₂ti
- Proto-Italic*fāōr
- Latinfor, fā-
- Latinfābula
- Proto-Indo-European*h₃ed-
- Proto-Indo-European*h₃édosder.?
- Latinfābulōsus
- Middle Englishfabulous
- English todayfabulous
From Late Middle English fabulous, fabulose, from Latin fābulōsus (“celebrated in fable”); Equivalent to fable + -ous.
Etymology from Wiktionary, CC BY-SA 4.0.