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Jyutping zin3 si1 dai2
Pinyin diàn shī dǐ

Definitions (粵典–words.hk)
  1. 動詞
    早過​人​死​,​或者​死​喺​最​底​;​比喻​成為​表現​最差​、​包​尾​嗰​個​人
    to die with others while being the earlier or the bottom one; figuratively to be the worst in performance, to be the last in competition
    • 乜都唔温去考試盞墊屍底。
      乜都唔温去考试盏垫尸底。
      mat1 dou1 m4 wan1 heoi3 haau2 si5 zaan2 zin3 si1 dai2.
      Without studying for the exam, you will only be the last in class.
  2. 動詞
    類似​同歸​於​盡​,​但令​對方​比​自己​早死
    (usu. of enemies) similar to end up in common ruin, but to make the enemy dies immediately before you
    • 係你累到我破產,如果呢關我過唔到,我一定揾你墊屍底!
      系你累到我破产,如果呢关我过唔到,我一定揾你垫尸底!
      hai6 nei5 leoi6 dou3 ngo5 po3 caan2, jyu4 gwo2 ni1 gwaan1 ngo5 gwo3 m4 dou2, ngo5 jat1 ding6 wan2 nei5 zin3 si1 dai2!
      It is all your fault to make me bankrupt, if I cannot endure this problem, I will surely drag you to die before mine !
Definitions (Wiktionary)
  1. verb, Cantonese
    to bring someone else down along with oneself
Examples (粵典–words.hk)
  1. Cantonese
    垫尸底
    墊屍底
    zin3 si1 dai2
    • to be sacrificed
  2. Cantonese
    乜都唔温去考试盏垫尸底。
    乜都唔温去考試盞墊屍底。
    mat1 dou1 m4 wan1 heoi3 haau2 si5 zaan2 zin3 si1 dai2.
    • Without studying for the exam, you will only be the last in class.
  3. Cantonese
    系你累到我破产,如果呢关我过唔到,我一定揾你垫尸底!
    係你累到我破產,如果呢關我過唔到,我一定揾你墊屍底!
    hai6 nei5 leoi6 dou3 ngo5 po3 caan2, jyu4 gwo2 ni1 gwaan1 ngo5 gwo3 m4 dou2, ngo5 jat1 ding6 wan2 nei5 zin3 si1 dai2!
    • It is all your fault to make me bankrupt, if I cannot endure this problem, I will surely drag you to die before mine !