dimmed

black, caliginous, dark, darkened, darkish, darkling, darksome, dim, dusk, dusky, gloomy, lightless, murky, obscure, obscured, pitch-black, pitch-dark, pitchy, rayless, somber (or sombre), stygian, tenebrific, tenebrous, unlit

beclouded, bedimmed, befogged, blackened, bleared, blurred, clouded, darkened, dislimned, fogged, fuzzed (up), hazed, misted, obscured, overcast, overclouded, overshadowed, shadowed, shrouded