失言 [ㄕ ㄧㄢˊ; shi1 yan2]
  slip of the tongue
  indiscretion
  to blurt out a secret
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  失言
  しつげん
  noun (common) (futsuumeishi)
  noun or participle which takes the aux. verb suru
  verbal gaffe
  verbal slip
  slip of the tongue
  using improper words
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