一いち段だん活かつ用よういちだんかつようMeanings1nounichidan verb conjugationgrammar›A grammatical term for the conjugation pattern of ichidan verbs (一段動詞), where the stem remains unchanged and endings attach directly. Contrasts with 五段活用 (godan conjugation).See also: 五段活用 · 一段動詞「食たべる
