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Jyutping sip3 gou1 zam2 tau4
Pinyin shè gāo zhěn tou

Definitions (粵典–words.hk)
  1. 語句
    諗​清楚​;​認真​、​仔細​考慮
    to think really hard, to think through something carefully; literally: to raise one's pillow by putting something underneath
    • 今晚你都係攝高枕頭吧啦!避唔到㗎喇。
      今晚你都系摄高枕头吧啦!避唔到㗎喇。
      gam1 maan1 nei5 dou1 hai6 sip3 gou1 zam2 tau4 baa2 laa1! bei6 m4 dou2 gaa3 laa3.
      You'd better think about it carefully. It's inevitable.
Definitions (Kaifangcidian)
  1. 想清楚
  2. 好好想一想

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Jyutping sip3 gou1 zam2 tau4
Pinyin shè gāo zhěn3tou

Definitions (CC-CANTO)
  1. to think long and hard about something [colloquial]
Examples (粵典–words.hk)
  1. Cantonese
    摄高枕头
    攝高枕頭
    sip3 gou1 zam2 tau4
    • Literally: to raise one's pillow by putting something underneath
  2. Cantonese
    今晚你都系摄高枕头吧啦!避唔到㗎喇。
    今晚你都係攝高枕頭吧啦!避唔到㗎喇。
    gam1 maan1 nei5 dou1 hai6 sip3 gou1 zam2 tau4 baa2 laa1! bei6 m4 dou2 gaa3 laa3.
    • You'd better think about it carefully. It's inevitable.