Grammar: Adjectives and Adverbs - GCFGlobal.org
edu.gcfglobal.org › en › grammarAn adverb is a word that describes a verb. Just like adjectives, adverbs are used to add detail to a sentence. More specifically, adverbs tell us how, when, or where something happened. In the example above, the word deeply describes how he was staring, so deeply is an adverb. In this sentence, it means he was staring in a deep way.