The story
- Latinsulpur
- Latinsulfur
- Latinsulphur
- Anglo-Normansulfre
- Middle Englishsulphur
- English todaysulfur
From Middle English sulphur, borrowed from Anglo-Norman sulfre, from Latin sulfur, from sulpur itself of uncertain origin. Displaced Old English swefl and largely displaced brimstone.
Etymology from Wiktionary, CC BY-SA 4.0.