hellish
131Stygian — Styg i*an, a. [L. Stygius, fr. Styx, Stygis, Gr. ?, ?, the Styx.] Of or pertaining to the river Styx; hence, hellish; infernal. See {Styx}. [1913 Webster] At that so sudden blaze, the Stygian throng Bent their aspect. Milton. [1913 Webster] …
132Tartarean — Tar*ta re*an, Tartareous Tar*ta re*ous, a. [L. tartareus: cf. F. tartar[ e]en.] Of or pertaining to Tartarus; hellish. [1913 Webster] …