ㄋㄨˊㄧㄢˊㄅㄧˋㄒㄧnúyán‑bìxī

奴颜婢膝
  1. 形容卑躬屈膝諂媚阿諛模樣 奴顏婢膝小人令人不齒」。

servile and bending the knee (idiom)​; fawning, bending and scraping to curry favor