Couldn't find anything for 踏み荒らす~, so trying 踏む instead.
|踏む||ふむ||1: to step on; to tread on;
2: to experience; to undergo;
3: to estimate; to value; to appraise;
4: to rhyme;
5: to inherit (the throne, etc.);
6: to follow (rules, morals, principles, etc.)
Look up kanji details for 踏む.
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ASCII safe link to this page: http://jisho.org/words?jap=%E8%B8%8F%E3%82%80&origin=%E8%B8%8F%E3%81%BF%E8%8D%92%E3%82%89%E3%81%99~&dict=edict