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Jyutping daai6 haa1 sai3
Pinyin dà xiā xì

Definitions (粵典–words.hk)
  1. 語句、俚語
    利用​自己​嘅​輩​份​、​身份​、​或​體型​去​欺負​其他人
    to abuse one's position, authority, or strength to bully others; literally "big bullying small"
    • 大蝦細,冇智慧。
      大虾细,冇智慧。
      daai6 haa1 sai3, mou5 zi3 wai3.
      A bully always lacks wisdom.

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Jyutping daai6 haa1 sai3
Pinyin dā4xia xì

Definitions (CC-CANTO)
  1. to bully / pick on someone younger or smaller or weaker [colloquial]
Examples (粵典–words.hk)
  1. Cantonese
    大虾细,冇智慧。
    大蝦細,冇智慧。
    daai6 haa1 sai3, mou5 zi3 wai3.
    • A bully always lacks wisdom.
  2. Cantonese
    大虾细
    大蝦細
    daai6 haa1 sai3
    • to use one's strength to bully the weak