From Wiktionary, the free dictionary
From Latin sulfur or sulphur, sulphure.
sulfre oblique singular, m (nominative singular sulfres)
- sulphur (element)
- Middle French: soufre, souffre, soffre
- → Middle English: sulphur, sulphre, sulphure, sulphour, sulpher, sulpur, sulfur, sulfurre, sulfer, soulphre, soulfre, solfre, soufur, soufre
