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Jyutping cit3 cit3 si1 jyu5
Pinyin qiè qiè sī yǔ

Definitions (CC-CEDICT)
  1. a private whisper
Definitions (Wiktionary)
  1. phrase, idiomatic
    Synonym of 竊竊私語/窃窃私语 (qièqièsīyǔ, “to talk in whispers”).
    (syn.) 竊竊私語, 窃窃私语