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to become muddy; to become cloudy; to become turbid; to become impure (of a liquid or gas)
to become dull (of a sound, color, etc.); to become indistinct; to become fuzzy; to become hoarse
to become impure (of one's heart, a society, etc.); to be corrupted; to be polluted
to become voiced (of a consonant); to be pronounced as a voiced sound
台風の後で川の水がひどく濁っていた。
The river water was very muddy after the typhoon.
声が濁っているのは風邪を引いたせいだ。
My voice is hoarse because I caught a cold.
金魚鉢の水が濁ってきたので替えよう。
The water in the fishbowl has become cloudy, so let's change it.