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Jyutping kit3 jan4 cong1 baa1
Pinyin jiē rén chuāng bā

Definitions (粵典–words.hk)
  1. 動詞
    提起​某個​人​唔​願意​俾​人​知​嘅​事
    (lit.) to uncover somebody's wound by lifting up the scab; (fig.) to expose somebody's weakness; to touch somebody's sore spot
    • 你成日揭人瘡疤,唔怪得噉多人討厭你。
      你成日揭人疮疤,唔怪得噉多人讨厌你。
      You always touch others' sore spot, that's why so many people hate you.
Examples (粵典–words.hk)
  1. Cantonese
    揭人疮疤
    揭人瘡疤
    kit3 jan4 cong1 baa1
    • to expose somebody's weakness
  2. Cantonese
    揭人疮疤
    揭人瘡疤
    • to use someone's traumatic experience against him; literally: to open up a scar
  3. Cantonese
    你成日揭人疮疤,唔怪得噉多人讨厌你。
    你成日揭人瘡疤,唔怪得噉多人討厭你。
    • You always touch others' sore spot, that's why so many people hate you.