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Jyutping bat1 zi1 so2 wai6
Pinyin bù zhī suǒ wèi

Definitions (CC-CEDICT)
  1. nonsense
  2. nonsensical
  3. incomprehensible
  4. to make no sense
Definitions (CC-CANTO)
  1. it is used to describe a person or a thing that is absurd and a nonsense
Definitions (粵典–words.hk)
  1. 形容詞
    不合情理​,​離譜
    ridiculous; absurd; nonsense
    • 佢講嘅嘢簡直不知所謂。
      佢讲嘅嘢简直不知所谓。
      keoi5 gong2 ge3 je5 gaan2 zik6 bat1 zi1 so2 wai6.
      What he's saying is basically total nonsense.
Examples (粵典–words.hk)
  1. Cantonese
    佢讲嘅嘢简直不知所谓。
    佢講嘅嘢簡直不知所謂。
    keoi5 gong2 ge3 je5 gaan2 zik6 bat1 zi1 so2 wai6.
    • What he's saying is basically total nonsense.
  2. Cantonese
    你份报告做到唔汤唔水,你真系不知所谓!
    你份報告做到唔湯唔水,你真係不知所謂!
    nei5 fan6 bou3 gou3 zou6 dou3 m4 tong1 m4 seoi2, nei5 zan1 hai6 bat1 zi1 so2 wai6!
    • Your report is neither fish nor fowl. You step out of line!
  3. Cantonese
    现今嘅青年人真系不知所谓。
    現今嘅青年人真係不知所謂。
    jin6 gam1 ge3 cing1 nin4 jan4 zan1 hai6 bat1 zi1 so2 wai6.
    • Teenagers nowadays are ridiculous.