vicious.
No. Savagely is an adverb. The adjective is just 'savage.'
Two antonyms (opposites) of "Savagely" might be "Gently" and "Tenderly".
Example sentence for the adverb savagely:A tornado savagely tore through the neighborhood tearing up houses and uprooting trees.
"I watched as the wolf savagely and quickly ripped open the rabbit's carcase."
Charles Sumner, a prominent proponent of the Abolition movement, was savagely beaten by pro slavery representative Preston Brooks.
Charles sumner
I saw a savage at the store
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Charles sumner
savagely,fierce,cruel,violent By avary
ferociously, savagely, passionately, furiously, viciously, tigerishly
Claude = clawed, i.e. "clawed savagely" would be the likely fate of anyone who encounters one of the monsters listed in the author's book.