Vendor adjectives are listed in this post. Each word below can often be found in front of the noun vendor in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing VENDOR.
approved, commercial, current, different
external, first, flower, itinerant
local, multiple, new, original
other, outside, particular, party
preferred, same, single, specific
Hope this word list had the adjective used with vendor you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.