上かみ二に段だん活かつ用よう

noun

upper bigrade conjugation; nidan verb conjugation (classical Japanese)

A classical Japanese verb conjugation class where the stem vowel alternates between /i/ and /u/ across forms. Modern Japanese verbs that were originally 上二段 have mostly shifted to 上一段 (upper monograde) conjugation.

• 上かみ二に段だん活かつ用ようは古こ典てん文ぶん法ぽうで学まなぶ動どう詞し活かつ用ようです。

  Upper bigrade conjugation is a verb conjugation studied in classical grammar.

• 上かみ二に段だん活かつ用ようは、未み然ぜん形けいが「い」段だん、連れん用よう形けいが「い」段だん、終しゅう止し形けいが「う」段だんになる活かつ用ようです。

  Upper bigrade conjugation is a conjugation where the irrealis form ends in the /i/ row, the continuative form ends in the /i/ row, and the terminal form ends in the /u/ row.