Superpower adjectives are listed in this post. Each word below can often be found in front of the noun superpower in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing SUPERPOWER.
american, economic, fragile
global, greatest, lone
military, new, only
other, regional, remaining
Hope this word list had the adjective used with superpower you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.