Definition
- C2
To behave in an uncontrolled or unrestrained manner, often without supervision or discipline.
（尤指兒童）放肆胡鬧
Since their parents started letting the kids decide their own schedules, they have started to run wild.
自從他們的父母開始讓孩子們自己決定作息時間後，他們就開始放縱無度。
Without any rules, the little boy would just run wild.
沒有任何規矩，這個小男孩就會完全失控。
The project started to run wild without any effective oversight.
這個專案在缺乏有效監督的情況下開始失控。