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Jyutping sam1 duk1
Pinyin shēn dǔ

Definitions (Wiktionary)
  1. adj, of feelings, usually
    deep; profound
    (syn.) 笃深, 深刻, 延延, 篤深, 幽幽, 深厚, 深遠, 深入, 孔, 深層, 深远, 深层