See murky in Webster's New World Roget's A-Z Thesaurus II
also
mirky adjective
Deficient in brightness:
caliginous, dark, dim, dusky, obscure. See lightLacking vividness in color:
dim, drab, dull, flat, muddy. See colorsHeavy, dark, or dense, especially with impurities:
hazy, smoggy, turbid. See clearHaving sediment or foreign particles stirred up or suspended:
cloudy, muddy, roiled, roily, turbid. See clear
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