音韻 おんいん交替 こうたいじゃありませんでした
on'inkōtaijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 音韻交替

1. Was not a phonetic change.; Was not an alternation of sounds.

Past/Perfective
Negative
Polite
Terminal Form
Linguistics