[--]

Jyutping bui3 seon3 hei3 ji6
Pinyin bèi xìn qì yì

Definitions (CC-CEDICT)
  1. breaking faith and abandoning right (idiom); to betray
  2. treachery
  3. perfidy
Definitions (粵典–words.hk)
  1. 語句
    違背​自己​嘅​承​諾​,​唔​顧道義
    to renege on one's promises and betray others' trust
    • 明哥唔係背信棄義嘅人,佢一定係有苦衷㗎。
      明哥唔系背信弃义嘅人,佢一定系有苦衷㗎。
      ming4 go1 m4 hai6 bui3 seon3 hei3 ji6 ge3 jan4, keoi5 jat1 ding6 hai6 jau5 fu2 cung1 gaa3.
      Brother Ming is not a person who breaks promises and betrays others' trust. He must have his reasons.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to break the faith and disregard righteousness; to act perfidiously; perfidious, treacherous; treachery, perfidy
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    背信弃义
    背信棄義
    • to renegade on one's promises and betray others' trust
  2. Cantonese
    明哥唔系背信弃义嘅人,佢一定系有苦衷㗎。
    明哥唔係背信棄義嘅人,佢一定係有苦衷㗎。
    ming4 go1 m4 hai6 bui3 seon3 hei3 ji6 ge3 jan4, keoi5 jat1 ding6 hai6 jau5 fu2 cung1 gaa3.
    • Brother Ming is not a person who breaks promises and betrays others' trust. He must have his reasons.