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Synonyms

Stygian

American  
[stij-ee-uhn] / ˈstɪdʒ i ən /
Also stygian

adjective

  1. of or relating to the river Styx or to Hades.

  2. dark or gloomy.

  3. infernal; hellish.


Stygian British  
/ ˈstɪdʒɪən /

adjective

  1. of or relating to the river Styx

  2. literary

    1. dark, gloomy, or hellish

    2. completely inviolable, as a vow sworn by the river Styx

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of Stygian

1560–70; < Latin Stygi ( us ) < Greek Stýgios ( Styg-, stem of Stýx Styx + -ios adj. suffix) + -an

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

A subtle reference to Serra’s father, a pipe fitter at a shipyard near San Francisco, it also puts us in mind of Charon’s ferry, shuttling souls across Stygian waters.

From The Wall Street Journal Oct. 31, 2025

They are the occupants of the outsize bunk bed at the center of Sabine Dargent’s set, shrouded in Stygian shadows by Mark Galione’s lighting.

From New York Times Jan. 14, 2019

The pictures – dramatic, intense, Stygian and insistently putting the Bible into the here and now – were like nothing seen before and their effect was instantaneous.

From The Guardian Oct. 7, 2016

For the next 90 minutes, we traveled the Stygian depths separately, our frantic text messages to each other getting through only when our trains briefly surfaced over the East River.

From Washington Post May 8, 2016

Nico drew his sword—three feet of wicked sharp Stygian iron, black as a nightmare.

From "The Last Olympian" by Rick Riordan

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