四段活用 よだんかつよう Meanings Noun yodan verb conjugation (i.e.: verb conjugation of classical Japanese) See also: 五段活用 (ごだんかつよう). Kanji 四 four. Read as よ. 段 step. Read as ダン. 活 active. Read as カツ. 用 use. Read as ヨウ. Word lists Linguistics Jinuma: Japanese Dictionary · Word lists