Answer
Al-Umari is the correct pronunciation of Oumari's last name in Lebanese Arabic. The "ou" in Oumari is pronounced as a long "oo" sound, similar to the "oo" in "boot." The "m" is pronounced with a nasal sound, and the "i" is pronounced as a short "i" sound, similar to the "i" in "sit." The "al-" prefix is a definite article that means "the."