FRATERNALLY

fraternally

(adverb) in a brotherly manner

Source: WordNet® 3.1

Etymology

Adverb

fraternally (comparative more fraternally, superlative most fraternally)

In a fraternal manner.

Source: Wiktionary

FRATERNAL

Fra*ter"nal, a.Etym: [F. fraternel, LL. fraternalis, fr. L. fraternus, fr. frater brother. See Brother.]

Definition: Pf, pertaining to, or involving, brethren; becoming to brothers; brotherly; as, fraternal affection; a fraternal embrace.

– Fra*ter"nal*ly, adv. An abhorred, a cursed, a fraternal war. Milton. Fraternal love and friendship. Addison.

Source: Webster’s Unabridged Dictionary 1913 Edition