バシバシ

バシバシ, ばしばしbashibashi

adverb

  1. violently
  2. without holding anything back
  3. firmly
  4. resolutely

Study it in Yanamino

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