Jar adjectives are listed in this post. Each word below can often be found in front of the noun jar in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing JAR.
airtight, big, blue, broken, brown, ceramic, clean, clear, closed
covered, cylindrical, earthen, electric, empty, endless, entire, first, full
gallon, glass, golden, great, heavy, huge, jelly, large, last
least, leyden, little, mouthed, new, old, open, other, ounce
plastic, porcelain, same, sealed, second, single, slight, slightest, small
sudden, tall, tiny, top, white, whole
Hope this word list had the adjective used with jar you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.