挖牆腳 [－墙脚]

Jyutping waat3 coeng4 goek3
Pinyin wā qiáng jiǎo

Definitions (CC-CEDICT)
  1. to undermine
  2. to let someone down
  3. to seduce someone away from something
Definitions (Wiktionary)
  1. verb, verb-object
    to steal an organisation's key member or someone's lover
    (syn.) 撬牆腳, 撬墙脚
  2. verb, verb-object
    to pull the rug out from under someone
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）