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).
雷が轟然と鳴り響いた。
Thunder roared loudly.
観客の拍手が轟然と会場に響いた。
The audience's applause resounded thunderously through the hall.