In a ferocious manner, particularly violent and aggressive.(adverb)
Intensely or extremely.(adverb)
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Use "ferociously" in a sentence
"And in two minutes, four seconds it was over: Louis attacked ferociously from the opening bell, knocking down Schmeling three times before the referee finally stopped it."
"But the battlefield where the war between preservation and commerce now rages most ferociously is the Wilderness, in Orange County, Virginia, where in May of 1864, the two armies took 28,000 casualties, some of them wounded men who were incinerated in a forest fire."
"My "translation" of it as "bit-by-bit -- ferociously" is just a paraphrase of "step-by-step -- courageously" which was the translation given by Alan Boyle at his Cosmic Log."