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Jyutping daa2 waai2
Pinyin dǎ huài

Definitions (粵典–words.hk)
  1. 名詞
    用​嚟​指​啲​後​生​孱弱​、​身體​差​、​唔​捱​得​(​「​打壞種​」​嘅​縮​略​,​指​繁殖​嘅​時​候​搞​錯​咗​啲​嘢​搞​到​出​現​問​題​)​(​量​詞​:​個​)
    (of young people) feeble person (shortened from 打壞種 daa2 waai6 zung2, which literally means "breeding gone wrong")

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Jyutping daa2 waai6
Pinyin dǎ huài

Definitions (CC-CANTO)
  1. to break; a term used to describe the feeble or deformed state of the body (literally: used bad / messed up seed while breeding)
Definitions (Wiktionary)
  1. verb
    to damage; to destroy
    (syn.) 拍歹, 拍㾀
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    冰雹打坏了庄稼。
    冰雹打壞了莊稼。
    bīng báo dǎ huài le zhuāng jia 。
    • The hailstorm ruined crops.
Examples (粵典–words.hk)
  1. Cantonese
    打坏 后生
    打壞 後生
    daa2 waai2 hau6 saang1
    • feeble young people