Final answer:
An adverb is a word that modifies a verb, adjective, or other adverbs by providing information about how, when, where, or to what extent an action is done.
Step-by-step explanation:
An adverb is a word that modifies a verb, adjective, or other adverbs. It provides more information about how, when, where, or to what extent an action is done. In the sentence 'David was widely respected,' the adverb 'widely' modifies the verb 'respected' by indicating the extent of the respect.
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