thunderously

English

Etymology

thunderous +‎ -ly

Adverb

thunderously (comparative more thunderously, superlative most thunderously)

1. In a thunderous manner, very loudly.
   • 1961 November, H. G. Ellison, P. G. Barlow, “Journey through France: Part One”, in Trains Illustrated, page 668:

     The line to Dunières consists of a series of breakneck descents almost invariably ended by a violent curve and followed immediately by a panting climb, on which the engine barked thunderously but failed unhappily to maintain its booked speed of 13 m.p.h.