Weakening adjectives are listed in this post. Each word below can often be found in front of the noun weakening in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing WEAKENING.
consequent, further
general, gradual
great, possible
progressive, serious
significant
Hope this word list had the adjective used with weakening you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.
Please add more adjectives to make this list more complete: