An adverb is a word that modifies a verb, adjective, or other adverb. Adverbs typically describe how, when, or where an action is performed, or the degree to which an adjective or another adverb applies. Adverbs can be formed from adjectives by adding "-ly" to the adjective form, for example "quick" becomes "quickly". Examples of adverbs include words like "quickly," "loudly," "carefully," "happily," "well," "soon," "there," "very." They often answer the question "how," "when," "where" or "to what extent".