Sicilian people primarily speak Sicilian, a Romance language that has elements of Italian, Arabic, Greek, and other languages due to the region's historical influences. It is not an official language but is widely spoken in Sicily alongside Italian.

Sicilian Language is different from Italian. Just like the other romance languages (French, Spanish, or Portuguese) are different from Italian. The Sicilian grammar shares the same fundamentals as the other Latin language and, in my opinion, has a closer relation to Spanish grammar.

The heritage of the Arabic language can still be found in numerous terms adapted from it.

No, because it would then be Italian. But Sicilian is considered a distinct language close to standard Italian. Neapolitan is intermediate between them.

Gloria Vitanza Basile has written numerous books on Italian and Sicilian culture, history, and language. Some of her works include "The Sicilian Crest," "Sicilian Immigrants in the United States," and "Made in Sicily." She is a renowned expert on Sicilian heritage and traditions.