The Osci (also called Oscans, Opici, Opsci, Obsci, Opicans)[1] were an Italic people of Campania and Latium adiectum before and during Roman times. They spoke the Oscan language, also spoken by the Samnites of Southern Italy. Although the language of the Samnites was called Oscan, the Samnites were never referred to as Osci, nor were the Osci called Samnites.
Traditions of the Opici fall into the legendary period of Italian history, roughly from the beginning of the first millennium BC until the foundation of the Roman Republic. No consensus can be reached concerning their location and language. By the end of this period, the Oscan language had evolved and was spoken by a number of sovereign tribal states. By far the most important of these in terms of military prowess and wealth was the Samnites, who rivalled Rome for about 50 years in the second half of the 4th century BC, sometimes being allies, and sometimes at war with the city, until they were finally subdued with considerable difficulty and were incorporated into the Roman state.
The Osci kept their independence by playing one state against another, especially the Romans and Samnites. Their sovereignty was finally lost during the Second Samnite War when, prior to invading Samnium, the Romans found it necessary to secure the border tribes. After the war, the Oscans assimilated quickly to Roman culture. Their cultural legacy survived only in place names and literary references.