Added 9 October 2026 sulphuric adjective Categories: Describing WordsRare Words adjective ! Definition from Wiktionary (CC BY-SA). More about sulphuric at Wordnik → Where our words come from → Alternative spelling of sulfuric. Related Words: sulfuricsulphursulfurtrioxidesulphuroussulphurysulphureoushydrochloricphosphoricchloricammoniaccarbonic Back to today's word