The definition of a vendetta is a lingering grudge or feeling of hatred for someone, such as a blood feud where the family of someone who had been killed seeks revenge on the family of the killer or his family.(noun)
When you hold a grudge against someone for a long time, this is an example of a vendetta.
See vendetta in Webster's New World College Dictionary
Origin: It < L vindicta, vengeance: see vindictive
See vendetta in American Heritage Dictionary 4
Origin: , from Latin vindicta, revenge; see vindictive.
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