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Jyutping ceoi1 seoi2 m4 maat3 zeoi2
Pinyin chuī shuǐ wú mǒ zuǐ

Definitions (粵典–words.hk)
  1. 動詞
    亂​咁​噏​;​作大​;​講大話​;​認叻
    to talk bullshit; to lie, to tell big lies; to boast
    • 小明成日吹水唔抹咀,明明自己得十蚊,講到自己有一百蚊。
      小明成日吹水唔抹咀,明明自己得十蚊,讲到自己有一百蚊。
      siu2 ming4 seng4 jat6 ceoi1 seoi2 m4 maat3 zeoi2, ming4 ming4 zi6 gei2 dak1 sap6 man1, gong2 dou3 zi6 gei2 jau5 jat1 baak3 man1.
      Siu Ming always tells big lies: He has ten dollars but he boasts he has a hundred!
  2. 參看
    吹水唔抹咀
Definitions (Wiktionary)
  1. verb, Cantonese
    to brag; to boast; to talk big
    (syn.) 吹牛不打草稿

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Jyutping ceoi1 seoi2 m4 maat3 zeoi2
Pinyin chuī shuǐ m2 mǒ zuǐ

Definitions (CC-CANTO)
  1. it describes people who overly boast/ exaggerate during chatting
Examples (粵典–words.hk)
  1. Cantonese
    吹水唔抹嘴
    吹水唔抹嘴
    ceoi1 seoi2 m4 maat3 zeoi2
    • to talk bullshit
  2. Cantonese
    佢吹水唔抹嘴,几无厘头嘅煲水新闻都可以讲到似层层 。
    佢吹水唔抹嘴,幾無厘頭嘅煲水新聞都可以講到似層層 。
    yue:佢吹水唔抹嘴,幾無厘頭嘅煲水新聞都可以講到似層層 。
    • He is very boastful and can spin the most groundless gossips into valid information.