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Jyutping daai6 jik6 bat1 dou6
Pinyin dà nì bù dào

Definitions (CC-CEDICT)
  1. disgraceful (of behavior that is unfilial, rebellious or otherwise in grave breach of the norms of society)
Definitions (CC-CANTO)
  1. noun; treason and heresy
Definitions (粵典–words.hk)
  1. 形容詞
    嚴重​違反​咗​社會​倫理觀
    treasonous; treacherous
Definitions (Wiktionary)
  1. phrase, idiomatic
    treason and heresy; worst offense; greatest outrage
    (syn.) 大逆無道, 大逆无道
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)