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Jyutping baak6 jiu4
Pinyin bái ráo

Definitions (Wiktionary)
  1. verb, regional
    to be in vain; to be no good; to be useless; to be of no use
    (syn.) 白搭
  2. verb, colloquial
    to give something extra for free
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

白饒 [-饶]

Jyutping
Pinyin bái ráo

Definitions (CC-CEDICT)
  1. to give sth extra free of charge
  2. (coll.) in vain; to no avail