バンバン

バンバン, ばんばんbanban

adverb

  1. with a bang bang (e.g. repeated sound of a hammer or gunfire)
  2. at a mad pace
  3. with great vigor

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences