New grammar refers to the latest set of rules, principles, and guidelines that dictate the correct usage and structuring of language. Synonyms for new grammar include modern grammar, contemporary grammar, current grammar, and up-to-date grammar. Other words that can be used in place of new grammar include contemporary language usage, recent linguistic trends, and modern syntax. These synonyms denote a focus on a fresh, updated perspective on grammar rather than outdated or traditional grammar rules. Using appropriate and relevant synonyms for new grammar provides a better understanding of how language evolves and changes over time.