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Jyutping sing2 ding6 di1
Pinyin xǐng dìng dī

Definitions (CC-CANTO)
  1. be smart; beware; pay attention (said with a warning tone)
Definitions (Kaifangcidian)
  1. 當心一點 – 当心一点
  2. 小心一點 – 小心一点
  3. 注意點兒 – 注意点儿
  4. 當心點兒 – 当心点儿
Examples (粵典–words.hk)
  1. Cantonese
    今日老板心情唔好,你醒定啲啊!
    今日老闆心情唔好,你醒定啲啊!
    • Today the boss is in a bad mood, you better watch out!