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Jyutping wui4 deoi6
Pinyin huí duǐ

Definitions (Wiktionary)
  1. verb, colloquial, neologism
    to retaliate verbally; to hit back (at critics)

回懟 [-怼]

Jyutping
Pinyin huí duǐ

Definitions (CC-CEDICT)
  1. (Internet slang) to retaliate verbally; to hit back (at critics)