tartarean
/tɑːrˈtɛriən/
adjective
- Relating to Tartarus, the underworld in Greek mythology; extremely dark, gloomy, or hellish.
- The villain's lair was described as a tartarean realm of fire and shadow.
- In the poem, the hero descends into a tartarean abyss.
- The abandoned mine had a tartarean darkness that made explorers shiver.