To trample down; to tread on something forcefully, often crushing or crushing underfoot.
子どもたちは遊んでいるうちに庭の花を踏みつけてしまった。
While playing, the children trampled the flowers in the yard.
彼は蛇を見てとっさに踏みつけた。
Seeing the snake, he instinctively stamped on it.
洪水で道が土砂に踏みつけられて荒れていた。
The road was trampled and ruined by mud and debris from the flood.
To ignore or spurn someone; to trample on someone's feelings, rights, or opinions (figuratively).
上司は部下の提案を踏みつけるように却下した。
The boss dismissed his subordinate's proposal as if trampling on it.
彼は弱い者を平然と踏みつけるような振る舞いをした。
He behaved as if he could calmly trample on the weak.