KanjiJLPT N1
Turbid

voiced, uncleanness, wrong, nigori, impurity

Mnemonic

A violent storm floods a cavern, churning up colonies of insects from the mud. You press your eye to the water's surface but see nothing—it is completely turbid, thick with silt and writhing bug parts, utterly impossible to see through.
Additional thoughts
Picture the storm water pouring into the cavern, insects swirling in the murky current, and your eye straining against the opaque, polluted water. The layered filth makes turbid feel visceral.
Quick recall
A storm floods a cavern full of insects, and your eye sees only turbid murk.

Details

The keyword for 濁 is turbid. This kanji refers to water or liquid that is cloudy, murky, or impure—the opposite of clear and transparent. It extends beyond physical muddiness to describe anything that is muddled, corrupted, or polluted, including sounds that are voiced or unrefined. In a broader sense, it can also refer to moral impurity or the defilement of the world.
On'yomi
だく、じょく
Kun'yomi
にご.る、にご.す