verb
1.
Synonyms: obscure , becloud, bedim, cloud, darken, dim, gloom, haze, mist, obfuscate
2.
Synonyms: soil 2, begrime, besoil, dirty, foul, grime, muddy, smirch, smudge, tarnish
MURK
Meaning of MURK in English
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003