Answer:
An adverb is a word that describes a verb
Example:
He swims well
She ran quickly
she spoke softly
Explanation:
An adverb is a word that can modify a verb, an adjective, or another adverb. Lots of adverbs end "-ly." For example: She swims quickly. (Here, the adverb "quickly" modifies the verb "swims.") She is an extremely quick swimmer.