Pitch-black and Unlighted

Pitch-black adjective - Being without light or without much light.

Unlighted and pitch-black are semantically related in inky topic. In some cases you can use "Unlighted" instead an adjective phrase "Pitch-black".

Unlighted adjective - Not set afire or burning.

Pitch-black and unlighted are semantically related in lack of light topic. You can use "Pitch-black" instead an adjective "Unlighted".