食言而肥 [－－－－]

Jyutping sik6 jin4 ji4 fei4
Pinyin shí yán ér féi

Definitions (CC-CEDICT)
  1. lit. to grow fat eating one's words (idiom)
  2. fig. not to live up to one's promises
Definitions (Wiktionary)
  1. phrase, idiomatic
    not to live up to one's promises
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）