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Jyutping bat1 sit3 jat1 gu3
Pinyin bù xiè yī gù

Definitions (CC-CEDICT)
  1. to disdain as beneath contempt (idiom)
Definitions (粵典–words.hk)
  1. 語句
    認為​某樣​嘢​唔​值得​理​,​有輕​視​嘅​意思​。
    to disdain; to despise; to regard something as worthless to care about
    • 女神對你不屑一顧,恐怕你連 觀音兵 都做唔成。
      女神对你不屑一顾,恐怕你连 观音兵 都做唔成。
      yue:女神對你不屑一顧,恐怕你連 觀音兵 都做唔成。
      The girl you loved ignored you, I afraid you even cannot become a "gun jam bing".
Definitions (Wiktionary)
  1. phrase, idiomatic
    to scorn; to sniff at; to dismiss (work or a suggestion)
  2. phrase, idiomatic
    infra dig; beneath contempt; displeasing to look at; sneering
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    他对我的提议不屑一顾。
    他對我的提議不屑一顧。
    tā duì wǒ de tí yì bù xiè yī gù 。
    • He wouldn't look at my proposal.
Examples (粵典–words.hk)
  1. Cantonese
    女神对你不屑一顾,恐怕你连 观音兵 都做唔成。
    女神對你不屑一顧,恐怕你連 觀音兵 都做唔成。
    yue:女神對你不屑一顧,恐怕你連 觀音兵 都做唔成。
    • The girl you loved ignored you, I afraid you even cannot become a "gun jam bing".
Examples (Wiktionary)
  1. Mandarin
    不屑一顾
    不屑一顧
    bù xiè yī gù
    • displeasing to look at, "to not be worth one glance"