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Jyutping ng5 si4 faa1 luk6 si4 bin3
Pinyin wǔ shí huā liù shí biàn

Definitions (CC-CANTO)
  1. indecisive (slang)
Definitions (粵典–words.hk)
  1. 語句、俚語
    情緒​或者​態度​變得​好​快​,​好難​捉摸
    fickle; moody; changeable; literally: five o'clock flower six o'clock change
    • 你個人五時花六時變嘅,你再諗清楚啲先同我講啦。
      你个人五时花六时变嘅,你再谂清楚啲先同我讲啦。
      nei5 go3 jan4 ng5 si4 faa1 luk6 si4 bin3 ge2,nei5 zoi3 nam2 cing1 co2 di1 sin1 tung4 ngo5 gong2 laa1.
      You change your mind so often. You'd better tell me after thinking more clearly.
Definitions (Wiktionary)
  1. phrase, Cantonese, idiomatic
    fickle; changeable; capricious
Examples (粵典–words.hk)
  1. Cantonese
    你个人五时花六时变嘅,你再谂清楚啲先同我讲啦。
    你個人五時花六時變嘅,你再諗清楚啲先同我講啦。
    nei5 go3 jan4 ng5 si4 faa1 luk6 si4 bin3 ge2,nei5 zoi3 nam2 cing1 co2 di1 sin1 tung4 ngo5 gong2 laa1.
    • You change your mind so often. You'd better tell me after thinking more clearly.