Adjektive
dark {colours}, [ darker ; darkest]
dim {colours}, [ dimmer ; dimmest]
tenebrous [ more tenebrous ; most tenebrous]
clouded {geogr.}
أَقْتَم {جغرافيا}
sooty {colours}
Verb
Noun
nightfall {astron.}
أَقْتَم {فضاء وعلوم طيران}