Lightness adjectives are listed in this post. Each word below can often be found in front of the noun lightness in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing LIGHTNESS.
airy, apparent, certain, comparative, extraordinary
extreme, fairy, feathery, forced, general
graceful, great, greater, heavy, incredible
more, much, natural, new, own
peculiar, relative, same, strange, such
sudden, unbearable, very, wonderful
Hope this word list had the adjective used with lightness you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.