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Jyutping fu3 faan2 jing3
Pinyin fù fǎn ying

Definitions (Wiktionary)
  1. noun
    Synonym of 副作用 (fùzuòyòng, “side effect”).
    (syn.) 副作用
  2. noun
    side reaction

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Jyutping fu3 faan2 jing3
Pinyin fù fǎn yìng

Definitions (Wiktionary)
  1. noun
    Synonym of 副作用 (fùzuòyòng, “side effect”).
    (syn.) 副作用
  2. noun
    side reaction