(Latin: darkness, dark)

(Latin: dark, to make dark; black; brown, tawny)

(Greek: the color black; dark)

(Greek: night; a relationship to darkness, dark)

(Latin: dark, dusky; indistinct, uncertain; unintelligible; vague; ambiguous)

(Latin: not transparent nor translucent, not clear, unable to shine through; shaded, shady; dark; no luster; not clearly understood or expressed)

(Latin: cruel, fierce; dark-looking, gloomy)

(Latin: sky-blue color; dark blue, azure)

(Greek: the color blue, dark blue)

(Greek ainigma > Latin aenigma: dark saying, riddle, fable; from ainissesthai, "to speak darkly, to speak in riddles")

(Deep-sea animals have made attempts to light their cold and dark environments by carrying their own lights on their heads and on every other conceivable part of the bodies; including their eyes and tails and the insides of their mouths. The light they shed is living light.)

(Latin: cloud, fog; shade; dark or obscure, not easy to comprehend)

(Pluto, Roman god of wealth, ruled the dark underworld of myth; ninth planet from the sun)