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Jyutping sei2 soeng1
Pinyin sǐ shuāng

Definitions (Wiktionary)
  1. adj, Hokkien, Xiamen
    listless; lackadaisical; lacking enthusiasm
    (syn.) 無精打采, 無神采, 无精打采, 无神采
  2. adj, Hokkien, Xiamen
    rigid; inflexible; stiff
    (syn.) 呆板, 死板