Fortnight adjectives are listed in this post. Each word below can often be found in front of the noun fortnight in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing FORTNIGHT.
dark, first
full, last
next, past
previous, whole
Hope this word list had the adjective used with fortnight you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.
fun addicive
fun