Adverb: a word that modifies verbs, adjectives, or other adverbs to indicate manner, degree, time, etc. (grammatical term).
彼はゆっくりと歩いた。「ゆっくり」は副詞だ。
He walked slowly. 'Yukkuri' is an adverb.
「とても」は程度を表す副詞の代表的な例だ。
'Totemo' is a typical example of an adverb expressing degree.
副詞は文中で動詞や形容詞を修飾して意味を詳しくする。
Adverbs modify verbs and adjectives in sentences to make meanings more specific.