Doubled (ぺらぺら)

ごつんごつん

ゴツンゴツン

thumping

Family

Doubled-ん
Light こつこつsteadily コツンwith a bonk
Heavy ごつんごつんthumping ゴツンthud

Senses

  1. thumping, banging

See ごつんごつん on Jisho.