tartarous
Tar"tar*ous, a. Etym: [Cf. F. tartareux.] Defn: Containing tartar; consisting of tartar, or partaking of its qualities; tartareous. Tar"tar*ous, a. Defn: Resembling, or characteristic of, a Tartar; ill-natured; irritable. The Tartarous moods of common men. B. Jonson.