Ill-lighted and Stygian

Stygian and ill-lighted are semantically related in lack of light topic. In some cases you can use "Stygian" instead an adjective phrase "Ill-lighted".

Stygian adjective - Being without light or without much light.

Ill-lighted and stygian are semantically related in lack of light topic. You can use "Ill-lighted" instead an adjective "Stygian".