濁る
1
to become muddy;to become cloudy;to become turbid;to become impure (of a liquid or gas)
川は泥で濁っていた。
The river was cloudy with silt.
2
to become dull (of a sound, color, etc.);to become indistinct;to become fuzzy;to become hoarse
3
to become impure (of one's heart, a society, etc.);to be corrupted;to be polluted
4
to become voiced (of a consonant);to be pronounced as a voiced sound