The story
- Proto-Indo-European*upó
- Ancient Greekῠ̔πό (hŭpó)
- Ancient Greekὑπο- (hupo-)
- Englishhypo-
- Latinsulpur
- Latinsulfur
- Latinsulphur
- Anglo-Normansulfre
- Middle Englishsulphur
- Englishsulfur
- Englishsulfite
- English todayhyposulfite
Etymology from Wiktionary, CC BY-SA 4.0.