The Collaborative International Dictionary
Unfriendship
Unfriendship \Un*friend"ship\, n. The state or quality of being unfriendly; unfriendliness; enmity.
An act of unfriendship to my sovereign person.
--Sir W.
Scott.
Wiktionary
unfriendship
n. unfriendliness; enmity
Usage examples of "unfriendship".
As one day he recalls his confidence to you as weakness, and to cast it out he will cast you away because you did accept it from him, so you served him well, and he is older now, and better unfriendship and weakness so cauterized than friendship which remembers.