Anniversary adjectives are listed in this post. Each word below can often be found in front of the noun anniversary in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing ANNIVERSARY.
actual, annual, centennial, eighteenth, eighth, eightieth, eleventh, fifteenth, fifth
fiftieth, first, fortieth, fourteenth, fourth, glorious, golden, grand, great
happy, hundredth, important, last, memorable, month, national, next, ninetieth
ninth, sad, same, second, seventeenth, seventh, seventieth, silver, sixteenth
sixth, sixtieth, solemn, special, tenth, third, thirteenth, thirtieth, twelfth
twentieth, twentyfifth, upcoming, very, wedding, year
Hope this word list had the adjective used with anniversary you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.