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Jyutping tou1 tou1 bat1 zyut6
Pinyin tāo tāo bù jué

Definitions (CC-CEDICT)
  1. unceasing torrent (idiom)
  2. talking non-stop
  3. gabbling forty to the dozen
Definitions (粵典–words.hk)
  1. 語句
    講唔​停口​,​雞​啄​唔​斷​,​就​好似​流水​不停​奔流
    to talk incessantly; literally: like water rushing out endlessly
    • 一講到佢嘅偶像,小明就滔滔不絕。
      一讲到佢嘅偶像,小明就滔滔不绝。
      jat1 gong2 dou3 keoi5 ge3 nau5 zoeng6, siu2 ming4 zau6 tou1 tou1 bat1 zyut6.
      Talking about his idol, Siu-Ming talks incessantly.
Definitions (Wiktionary)
  1. phrase, idiomatic, of talking
    endless; talking nineteen to the dozen
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #4027
Examples (粵典–words.hk)
  1. Cantonese
    一讲到佢嘅偶像,小明就滔滔不绝。
    一講到佢嘅偶像,小明就滔滔不絕。
    jat1 gong2 dou3 keoi5 ge3 nau5 zoeng6, siu2 ming4 zau6 tou1 tou1 bat1 zyut6.
    • Talking about his idol, Siu-Ming talks incessantly.
  2. Cantonese
    讲到自己嘅专业领域,佢就口沫横飞,滔滔不绝。
    講到自己嘅專業領域,佢就口沫橫飛,滔滔不絕。
    gong2 dou3 zi6 gei2 ge3 zyun1 jip6 ling5 wik6, keoi5 zau6 hau2 mut6 waang4 fei1, tou1 tou1 bat1 zyut6.
    • When talking about his own expertise, he keeps speaking freely.
  3. Cantonese
    滔滔不绝
    滔滔不絕
    • babbling so intensely that it feels like it would never end