grammar

The story starts in classical Greece with gramma, a written mark or letter. From that noun came grammatike, the craft concerned with letters and reading. In Athens by the 4th century BCE, the word pointed to literacy and the study of texts. It was first about writing itself, not about scolding anyone's sentence.

Romans took over the school term as grammatica in the last centuries BCE. In Latin, it kept the sense of philology, literary study, and correct language. Teachers of grammatica handled poets, forms, and rules. The schoolroom gave the word its durable authority.

Old French reshaped the word into gramaire by the 11th and 12th centuries. In medieval Europe, gramaire meant learning from books, especially Latin learning. Because book learning seemed mysterious, the word drifted toward meanings like occult knowledge in some contexts. English inherited both the school sense and the aura of learned difficulty.

By Middle English, grammar named the rules and structure of language itself. Printed textbooks in the 16th and 17th centuries narrowed the term toward syntax, inflection, and correctness. Modern linguistics later widened it again to mean the internal system of a language, spoken or signed. The old letter craft became the name for language structure as a whole.