beclouded

bedimmed, befogged, blackened, darkened, darksome, dim, dimmed, dulled, dusky, misty, murky, obscure, obscured, overshadowed

sunless

black, bleak, cheerless, dark, desolate, dismal, drear, dreary, funereal, gloomy, glum, gray (also grey), sepulchral, somber (or sombre), sullen

overcast, rainy, stormy, thick

dirty, miry, mucky, muddy, slimy, slushy, turbid

miasmal, miasmatic, miasmic

smoky (also smokey), smudgy, sooty

filmy, milky, opaque

complicated, perplexed, sophisticated

entangled, snarled, tangled

disarranged, disarrayed, discomposed, disheveled (or dishevelled), disordered, disrupted, disturbed, jumbled, messed (up), mixed (up), muddled, scrambled, shuffled, tousled, upset

adumbrated, blotted out, concealed, eclipsed, hid, obliterated, screened, shaded

camouflaged, cloaked, covered, curtained, disguised, masked, veiled