Grammar adjectives are listed in this post. Each word below can often be found in front of the noun grammar in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing GRAMMAR.
advanced, arabic, bad, basic, best, better, catholic, chinese, classical, common, comparative, complete, complex, correct
elementary, english, excellent, false, faulty, first, formal, free, french, functional, general, generative, geographical, german
good, greek, higher, historical, incorrect, indian, irish, italian, latin, little, local, many, mere, modern
moral, new, old, only, ordinary, other, own, particular, perfect, persian, philosophical, poor, practical, private
proper, public, regular, russian, same, sanskrit, scientific, shakespearian, short, simple, small, spanish, specific, standard
strict, such, technical, traditional, transformational, universal, upper, very, visual, whole
Hope this word list had the adjective used with grammar you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.