Kuzushi

Kuzushi(崩し:くずし) is a Japanese term for unbalancing an opponent in the Japanese martial arts.

The noun comes from the transitive verb kuzusu (崩す), meaning to level, pull down, destroy or demolish. As such, it is refers to not just an unbalancing, but the process of putting an opponent to a position, where his stability, hence the ability to regain uncompromised balance for attacking is destroyed.