A state or feeling of opposition, hostility, hatred or animosity.
The quality of being an enemy; hostile or unfriendly disposition.
A motivational grudge against a person or faction, which may or may not be reciprocated; the state of having it in for someone.
Revenge.
A bitter, destructive feud, normally between two families, clans, or factions, in which each injury or slaying is revenged: a blood feud.