true or false An adverd is a word used to modify a verb.

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http://www.merriam-webster.com/dictionary/adverb

True.

An adverb is a word used to modify a verb, adjective, or another adverb. It provides information about how, when, where, or to what extent an action is performed. Adverbs often end in -ly, such as "quickly" or "carefully," but there are also many adverbs that do not have the -ly ending.

To determine whether an adverb is used to modify a verb, you can ask yourself the question "how?" or "in what manner?" regarding the verb. If the word you are considering answers these questions, then it is likely an adverb. For example, in the sentence "She runs quickly," the adverb "quickly" provides information about how she runs, so it modifies the verb "runs."