Vulgar Latin - Sources

Sources

It cannot be supposed that the spoken language was a distinct and persistent language so that the citizens of Rome would be regarded as bilingual. Instead, Vulgar Latin is a blanket term covering the popular dialects and sociolects of the Latin language throughout its range from the hypothetical prisca latinitas of unknown or poorly remembered times in early Latium to the death of Latin after the fall of the empire. Although making it clear that sermo vulgaris existed, the ancients said very little about it. Because it was not transcribed, it can only be studied indirectly. Knowledge comes from these chief sources:

1. Solecisms, especially in Late Latin texts.
2. Mention of it by ancient grammarians, including prescriptive grammar texts from the Late Latin period condemning linguistic "errors" that represent spoken Latin.
3. The comparative method, which reconstructs Proto-Romance, a hypothetical vernacular proto-language from which the Romance languages descended.
4. Some literary works written in a lower register of Latin provide a glimpse into the world of Vulgar Latin in the classical period: the dialogues of the plays of Plautus and Terence, being comedies with many characters who were slaves, and the speech of freedmen in the Cena Trimalchionis by Petronius Arbiter