vendetta

/vษ›nหˆdษ›tษ™/
noun
  1. 1

    A bitter, destructive feud, normally between two families, clans or factions, in which each injury or slaying is revenged: a blood feud.

  2. 2

    (often preceded by personal) A motivational grudge against a person or faction, which may or may not be reciprocated; the state of having it in for someone.

Source: https://en.wiktionary.org/wiki/vendetta