Acknowledgement adjectives are listed in this post. Each word below can often be found in front of the noun acknowledgement in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing ACKNOWLEDGEMENT.
due, explicit, formal, frank
full, general, grateful, humble
implicit, little, official, open
own, personal, proper, public
simple, special, such, tacit
universal, widespread, written
Hope this word list had the adjective used with acknowledgement you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.