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Jyutping caam2 huk6
Pinyin cǎn kù

Definitions (Wiktionary)
  1. adj, literary
    extremely cruel; heartless
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

慘酷 [惨-]

Jyutping
Pinyin cǎn kù

Definitions (CC-CEDICT)
  1. (literary) cruel; savage; merciless