Jisho

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Adverb taking the 'to' particle, Adverb (fukushi)
1. steadily; unflaggingly; untiringly; laboriously; diligentlyOnomatopoeic or mimetic word
  • かれ
  • こつこつ
  • じじつ事実
  • しら調べていた
He was patiently digging for facts.
Adverb taking the 'to' particle, Adverb (fukushi)
2. knocking; tapping; clicking; drummingOnomatopoeic or mimetic word
  • だれか
  • ドア
  • こつこつ
  • たたいている
Someone is tapping at the door.
Other forms
こつこつ

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