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Jyutping fong3 duk6
Pinyin fàng dú

Definitions (CC-CEDICT)
  1. to poison
  2. (fig.) to spread vicious rumors
Definitions (Wiktionary)
  1. verb
    to poison
  2. verb, figuratively
    to spread poisonous ideas
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    笑骑骑,放毒蛇
    笑騎騎,放毒蛇
    siu3 ke4 ke4, fong3 duk6 se4
    • to behave in a friendly manner to someone on one hand and set him up on the other hand