What part of speech is the word in parentheses? If we finish our work (quickly) we can go to the movies.

The word inside the parentheses is a adverb. An adverb is a verb that has an -ly at the end of the verb, but not all adverbs are a verb. An adverb is a word that modifies a verb, adjective, or another adverb.

For example, She shouted loudly onto the phone.

(Hope this helps) Sky

for the comment!