No, it is not. It is a noun formed from the adjective, which is ferocious (wild, violent, or fierce).
Frantic is an adjective
Fiercely is an adverb (ferociously, violently). The adjective is simply fierce.
The mother cat ferociously defended her kitten.The victim was ferociously murdered.
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"This is a ferociously short sentence."
The lion ferociously roared.
Ferociously Stoned was created in 1990-08.
A large gorilla pounced on the poacher, ferociously attacking the man's face and neck.
A misspelling of ferociously.
Ferociously.
viciously.
violently, ferociously, strongly