n.
Pronunciation: ' sti-j( ē -) ə n
Function: adjective
Usage: often cap
Etymology: Latin stygius, from Greek stygios, from Styg-, Styx Styx
Date: 1513
1 : of or relating to the river Styx
2 : extremely dark, gloomy, or forbidding <the stygian blackness of the cave>