FRENETICALLY

demoniacally, frenetically

(adverb) in a very agitated manner; as if possessed by an evil spirit

Source: WordNet® 3.1

Etymology

Adverb

frenetically (comparative more frenetically, superlative most frenetically)

In a frenetic manner

Source: Wiktionary

FRENETIC

Fre*net"ic, a. Etym: [See Frantic, a.]

Definition: Distracted; mad; frantic; phrenetic. Milton.

FRENETICAL

Fre*net"ic*al, a.

Definition: Frenetic; frantic; frenzied.

– Frenet"ic*al*ly, adv.

Source: Webster’s Unabridged Dictionary 1913 Edition