ドキドキ
  どきどき
  どきんどきん
  ドキンドキン
  adverb (fukushi)
  adverb taking the `to' particle
  onomatopoeic or mimetic word
  thump-thump
  bang-bang
  pit-a-pat
  pitapat
  pitter-patter
  noun or participle which takes the aux. verb suru
  onomatopoeic or mimetic word
  to beat fast (of one's heart)
  to throb
  to pound
  to palpitate
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