- kusaru to rot, to go bad, to decay, to spoil, to fester, to decompose, to turn sour (e.g. milk); to corrode, to weather, to crumble; to become useless, to blunt, to weaken (from lack of practice); to become depraved, to be degenerate, to be morally bankrupt, to be corrupt
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Found in a wide range of contexts. Useful for building reading and listening fluency.
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