Adverb

A word that describes or changes a verb, an adjective, another adverb, or even a whole sentence. It often tells how, when, where, or to what extent something happens, like “quickly,” “yesterday,” or “very.”

From Latin *adverbium* meaning “that which is added to a verb,” from *ad-* “to” and *verbum* “word, verb.” It came into English through Latin-based grammar traditions.