Denshi Jisho — Online Japanese dictionary

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: (Archaism) to inherit (the throne, etc.);
6: to follow (rules, morals, principles, etc.)
Common word, Godan verb with mu ending, Transitive verb 

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