Question: is many an adjective or adverb?
Answer: The part-of-speech MANY is an adjective which modifies plural nouns. For example, we say “ the book store has many shelves.” “Or, there are many students in the library.” Here, the adjective MANY modifies SHELVES and STUDENTS. An adverb, on the other hand, modifies a VERB, an ADJECTIVE, and an Adverb.