-ん (どん) · #430 by frequency · Usually written in katakana

コツン

こつん

with a bonk

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. with a bonk, with a thump, with a klunk, with a rap

See こつん on Jisho.