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Jyutping gung3 gung3 dik1
Pinyin gàng gàng de

Definitions (Wiktionary)
  1. adj, Mandarin, Northeastern, colloquial, common, slang
    powerful; valiant; full of dash; very good; great

[-]

Jyutping gung3 gung3 dik1
Pinyin gáng gáng de

Definitions (Wiktionary)
  1. adj, Mandarin, Northeastern, colloquial, common, slang
    powerful; valiant; full of dash; very good; great

槓槓的 [杠杠-]

Jyutping
Pinyin gáng gáng de

Definitions (CC-CEDICT)
  1. (slang, originally northeast dialect) excellent
  2. great