Contractor adjectives are listed in this post. Each word below can often be found in front of the noun contractor in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing CONTRACTOR.
american, civilian, electrical, experienced, federal
first, general, good, great, independent
large, licensed, local, main, military
new, original, other, outside, primary
prime, principal, private, same, small
Hope this word list had the adjective used with contractor you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.