JMdict: 1593500

轟々 【ごうごう】

  1. [adj-t,adv-to] thundering; roaring; rumbling; booming
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Roar, Thunder, Boom Resound ゴウ, コウ とどろ.かす, とどろ.く