ad·verb /ˈædˌvɚ/
副詞
Ad·verb n. Gram. A word used to modify the sense of a verb, participle, adjective, or other adverb, and usually placed near it; as, he writes well; paper extremely white.
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adverb
n 1: the word class that qualifies verbs or clauses
2: a word that modifies something other than a noun