腐
フ, くさ.る, くさ.る, くさ.れる, くさ.れ, くさ.らす, くさ.す

rot, decay, sour

JLPT1 G7 S14 F1225

As per 府# (storehouse) + 肉 flesh → stored meat that has spoiled → *spoil*; *rot*; *decompose*; *decay*; *go bad*; *corrode*; *corrupt*.

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