ㄔㄨˋchùㄐㄧˊㄎㄨㄟˋkuì

  1. 接觸潰敗形容非常容易打垮那些烏合之眾一觸即潰。」牢不可破堅不可摧堅如磐石

to collapse on the first encounter, to give way at once