avvenuti
Avvenuti is an Italian word that functions as both the past participle of the verb avvenire and as an adjective. In its participle role, it is used in compound tenses with essere, as in è avvenuto or sono avvenuti, meaning “it happened” or “they happened.” As an adjective, avvenuti describes events or facts that have already occurred, for example i fatti avvenuti or eventi avvenuti. The feminine forms are avvenuta (singular) and avvenute (plural).
Etymology and forms: The verb avvenire derives from Latin advenire, through the development of Old Italian.
Usage notes: Avvenuti is common in both spoken and written Italian, especially in news, history, and formal
See also: Avvenire, the verb avvenire, and avvenimento/avvenimenti as common noun forms for “event.”