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Jyutping zau2 hau6 tou3 zan1 jin4
Pinyin jiǔ hòu tǔ zhēn yán

Definitions (CC-CEDICT)
  1. after wine, spit out the truth
  2. in vino veritas
Definitions (Wiktionary)
  1. phrase, idiomatic, literally
    in wine, there is truth
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    酒后吐真言。
    酒後吐真言。
    jiǔ hòu tǔ zhēn yán 。
    • A drunk man's words are a sober man's thoughts.
Examples (粵典–words.hk)
  1. Cantonese
    酒后吐真言
    酒後吐真言
    • One's hidden thoughts may come out when one is drunk.