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to grow wild; to run to waste; to become degenerate
to become rough (of art, craft, etc.); to lose refinement; to deteriorate (of skill)
to intensify (of wind, rain, etc.); to become more severe
風が激しく荒んでいた。
The wind was raging violently.
海が荒れて船が出せない。
The sea is rough, so no boats can go out.
心が荒んでしまいそうだ。
I feel like my heart will grow desolate.