Webster's Revised Unabridged Dictionary · 1913

Fraternal

Fraternal , adjective

[French fraternel, Late Latin fraternalis, from Latin fraternus, from frater brother. See Brother.]

Of, pertaining to, or involving, brethren; becoming to brothers; brotherly; as, fraternal affection; a fraternal embrace.
An abhorred, a cursed, a fraternal war. — Milton
Fraternal love and friendship. — Addison