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Jyutping dei6 dai2 nai4
Pinyin dì dǐ ní

Definitions (粵典–words.hk)
  1. 名詞
    指​地位​卑微​唔​受​尊重​嘅​人​,​又​指​人格​有問​題​嘅​人
    someone not worthy or not being respected; something cheap and nasty; literally, underground soil
    • 賤過地底泥
      贱过地底泥
      to be worse than scum
Definitions (Kaifangcidian)
  1. 次品
  2. 劣貨 – 劣货

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Jyutping dei6 dai2 nai4
Pinyin dǐ4di ní

Definitions (CC-CANTO)
  1. a worthless wretch; a useless person [colloquial]
Examples (粵典–words.hk)
  1. Cantonese
    贱过地底泥
    賤過地底泥
    • to be worse than scum
  2. Cantonese
    我做文员,响公司架构嚟讲嘅话系地底泥。
    我做文員,響公司架構嚟講嘅話係地底泥。
    ngo5 zou6 man4 jyun4, hoeng2 gung1 si1 gaa3 kau3 lai4 gong2 ge3 waa2 hai6 dei6 dai2 nai4.
    • A clerk like me is the bottom layer of the corporate pyramid.