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Jyutping doi6 wai6
Pinyin dài wéi

Definitions (Wiktionary)
  1. verb
    to do on behalf of; to do something for (someone)

[-]

Jyutping doi6 wai4
Pinyin dài wéi

Definitions (粵典–words.hk)
  1. 副詞
    幫一個​人​或者​以其​名義做​嘢
    on behalf of
    • 代為保管
      代为保管
      to safe keep
Examples (粵典–words.hk)
  1. Cantonese
    代为保管
    代為保管
    • to safe keep