Stygius adj.,
of the Styx, Stygian, of the lower world, infernal: palus, V.: cymba, i. e. of Charon, V.: Iuppiter, i. e. Pluto, V.—Deadly, fatal, awful: vis, V.: nox, i. e. death, O.
Stygĭus, a, um, v. Styx, II. 1. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.