下二段活用 しもにだんかつよう conjugation (inflection, declension) of nidan verbs (resulting in a stem of either "e" or "u" for every conjugation) n Advanced ➥
上二段活用 かみにだんかつよう conjugation (inflection, declension) of nidan verbs (resulting in a stem of either "i" or "u" for every conjugation) n Advanced ➥