篤底 [笃－]

Jyutping duk1 dai2
Pinyin dǔ dǐ

Definitions (CC-CANTO)
  1. bottom-most (spoken)
Definitions (粵典–words.hk)
  1. x
Definitions (Kaifangcidian)
  1. 底下的
  2. 底層的 – 底层的