The story
- Proto-Indo-European*méǵh₂s
- Proto-Hellenic*mégas
- Ancient Greekμέγᾰς (mégăs)
- Englishmega-
- Proto-West Germanic*bisīg
- Old Englishbisiġ
- Old Englishbisiġnes
- Middle Englishbisynes
- Englishbusiness
- English todaymegabusiness
Etymology from Wiktionary, CC BY-SA 4.0.