旦旦信誓 [－－－－]

Jyutping daan3 daan3 seon3 sai6
Pinyin dàn dàn xìn shì

Definitions (Wiktionary)
  1. phrase, idiomatic
    Synonym of 信誓旦旦 (xìnshìdàndàn, “pledging in all sincerity; vowing solemnly”).
    (syn.) 信誓旦旦
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）