Annexation adjectives are listed in this post. Each word below can often be found in front of the noun annexation in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing ANNEXATION.
american, british, complete, eventual
forcible, formal, french, german
hawaiian, immediate, japanese, outright
permanent, recent, russian, soviet
such, territorial, ultimate
Hope this word list had the adjective used with annexation you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.