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Jyutping bat1 soeng1 gon1
Pinyin bù xiāng gān

Definitions (CC-CEDICT)
  1. to be irrelevant
  2. to have nothing to do with
Definitions (Wiktionary)
  1. verb
    to have nothing to do with; to matter little; to be irrelevant
    (syn.) 冇關係, 無相干, 無底代, 无关系, 無干過, 无干过, 没关系, 冇相干, 沒關係, 冇关系, 無關係, 无相干, 不切题, 无底代, 不切題
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    为什么你要干涉一件跟你完全不相干的事呢?
    為什麼你要干涉一件跟你完全不相干的事呢?
    wèi shén me nǐ yào gān shè yī jiàn gēn nǐ wán quán bù xiāng gān de shì ne ?
    • Why did you interfere in an affair that did not concern you at all?
Examples (粵典–words.hk)
  1. Cantonese
    互不相干
    互不相干
    wu6 bat1 soeng1 gon1
    • out of each others' concern
  2. Cantonese
    同主题毫不相干
    同主題毫不相干
    tung4 zyu2 tai4 hou4 bat1 soeng1 gon1
    • irrelevant to the topic