The story
- Proto-Indo-European*sóh₂wl̥
- Proto-Indo-European*sh₂wél(i)yos
- Proto-Hellenic*hāwélios
- Ancient Greekἥλῐος (hḗlĭos)
- Englishhelio-
- Proto-Indo-European*bʰógʷos
- Proto-Hellenic*pʰógʷos
- Ancient Greekφόβος (phóbos)
- English todayheliophobia
Etymology from Wiktionary, CC BY-SA 4.0.