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Jyutping gaa1 fui3
Pinyin jiā huì

Definitions (Wiktionary)
  1. verb, Hokkien, Quanzhou, Xiamen
    to talk out of turn; to shoot one's mouth off
    (syn.) 加喙加舌, 多嘴, 剧牙, 厚喙厚舌, 厚艺, 劇牙, 厚藝