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Jyutping ngaa4 caat3 caat3
Pinyin yá cā cā

Definitions (CC-CANTO)
  1. someone who likes to brag; cocky
Definitions (粵典–words.hk)
  1. 形容詞、俚語
    形容​人講​嘢​過份​自信​,​鍾​意​自吹自擂
    boastful
    • 佢牙擦擦咁款,成日睇低人。
      佢牙擦擦咁款,成日睇低人。
      keoi5 ngaa4 caat3 caat3 gam2 fun2, seng4 jat6 tai2 dai1 jan4.
      He is being boastful, always looking down on everyone but himself.
Definitions (Wiktionary)
  1. adj, Cantonese
    boastful; arrogant; conceited
    (syn.) 牙擦
Definitions (Kaifangcidian)
  1. 自大
  2. 自負 – 自负
  3. 狂妄
  4. 臭吹
  5. 口氣大 – 口气大
  6. 誇誇其談 – 夸夸其谈
Examples (粵典–words.hk)
  1. Cantonese
    佢牙擦擦咁款,成日睇低人。
    佢牙擦擦咁款,成日睇低人。
    keoi5 ngaa4 caat3 caat3 gam2 fun2, seng4 jat6 tai2 dai1 jan4.
    • He is being boastful, always looking down on everyone but himself.