闇
アン, オン, やみ, くら.い

get dark, gloom, disorder

JLPT0 G7 S17 F1969

As per 音# (indistinct) + 門 gate → scant light penetrating a gate (compare 暗) → *dark*; *dim* → *secret(ly)*; *clandestine(ly)*; *hidden*.

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