What does 濁る mean?
濁る is a Japanese verb meaning “to become muddy, to get cloudy” in English. It can also be translated as “to become dull (of a sound, color, etc.), to become impure (of one's heart, a society, etc.), to become voiced (of a consonant)” depending on context. It is written as 濁る in kanji, にごる in hiragana, and nigoru in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
川は泥で濁っていた。
The river was cloudy with silt.