Last Updated
：2026/01/03
一段活用
Hiragana
いちだんかつよう
Noun
Japanese Meaning
日本語の動詞の活用の一種で、活用語尾が一段のみ変化するもの。上下一段活用を含む。
Easy Japanese Meaning
るでおわるどうしなどで、かたちがあまりかわらないかつようのグループ
Chinese (Simplified) Meaning
（日语语法）动词的“一段活用”类别，包含上一段活用与下一段活用。 / 日语“一段动词”变形体系的总称。
Chinese (Traditional) Meaning
日語文法中的單一母音段動詞活用類，分為上一段活用與下一段活用 / 現代日語中語幹固定、以「～る」結尾並透過去「る」等方式變化的動詞類
Korean Meaning
일본어 문법에서, 상일단활용과 하일단활용으로 이루어진 동사 활용 유형 / 어간의 모음 변화가 한 단에서만 일어나는 일본어 동사 활용 범주
Vietnamese Meaning
lớp chia động từ nhất đoạn trong ngữ pháp Nhật (gồm thượng nhất đoạn và hạ nhất đoạn) / nhóm động từ Ichidan (nhóm nhất đoạn)
Sense（1）
(grammar) The monograde verb conjugation class, consisting of the two subclasses of 上(かみ)一(いち)段(だん)活(かつ)用(よう) (kami ichidan katsuyō, “upper-monograde conjugation”) and 下(しも)一(いち)段(だん)活(かつ)用(よう) (shimo ichidan katsuyō, “lower-monograde conjugation”)
（ canonical ）
（ romanization ）
（ hiragana ）
Quizzes for review
(grammar) The monograde verb conjugation class, consisting of the two subclasses of 上(かみ)一(いち)段(だん)活(かつ)用(よう) (kami ichidan katsuyō, “upper-monograde conjugation”) and 下(しも)一(いち)段(だん)活(かつ)用(よう) (shimo ichidan katsuyō, “lower-monograde conjugation”)
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一段活用
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Monograde verb conjugation class verbs play a very important role in Japanese grammar.
Monograde verb conjugation class verbs play a very important role in Japanese grammar.
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一段活用の動詞は、日本語の文法で非常に重要な役割を果たしています。
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