to lower your moral standards by doing something that is unpleasant, dishonest, or unfair

I don't believe she would ever stoop to bribery or blackmail. 我不相信她会堕落到行贿和勒索的地步。

[ + -ing verb ] He was amazed that a reputable firm would stoop to selling the names of their clients to other companies. 他很吃惊一家声誉卓著的公司竟会堕落到把客户的名单出卖给其他公司。