ビシバシ

ビシバシ, びしばしbishibashi

adverb

  1. without holding anything back
  2. mercilessly
  3. relentlessly
  4. energetically
  5. vigorously

Study it in Yanamino

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