四よ段だん活かつ用よう

noun

yodan verb conjugation; classical Japanese verb conjugation

Linguistics term for the four-grade verb conjugation pattern of classical Japanese, the predecessor of modern godan (五段) verbs.

See also: 五段活用

• 古こ典てん文ぶん法ぽうでは、四よ段だん活かつ用ようは未み然ぜん・連れん用よう・終しゅう止し・連れん体たい・已い然ぜん・命めい令れいの六むっつの活かつ用よう形けいを持もつ。

  In classical Japanese grammar, yodan conjugation has six inflected forms: mizen, ren'yō, shūshi, rentai, izen, and meirei.

• 「書かく」は四よ段だん活かつ用ようの動どう詞しで、未み然ぜん形けいは「書かか」、連れん用よう形けいは「書かき」となる。

  'Kaku' (to write) is a yodan verb; its mizenkei is 'kaka' and its ren'yōkei is 'kaki'.