How to Say "vernacular" in Spanish
The Spanish word for “vernacular” is “vulgar” — C1 level.
English → SpanishC1
adjectiveC1formal
relating to the common language

Examples
El latín vulgar evolucionó para formar las lenguas romances.
Vulgar Latin evolved to form the Romance languages.
Es un error de dominio vulgar que mucha gente acepta como verdad.
It is a common error that many people accept as truth.
Historical Context
This meaning reflects the word's original connection to the 'vulgus' (the common crowd or people). When you hear it in historical or linguistic contexts, it simply means 'of the people,' without the negative connotation.
Learn Spanish with Inklingo
Interactive stories, personalized learning, and more.