轟ごう然ぜん

taru-adjective, adverb taking the 'to' particle

roaring; thundering; deafening

Describes a loud, deep, resonant sound such as thunder, an explosion, or a roaring crowd. Literary and somewhat dramatic; often used with と (e.g., 轟然と鳴り響く).

• 雷かみなりが轟ごう然ぜんと鳴なり響ひびいた。

  Thunder roared loudly.