ひおばあさんじゃなかったです
曾おばあさんじゃなかったです
hiobāsanjanakattadesu

Noun
Desu Copula

The polite, past negative form of ひいおばあさん

1. Wasn't my grandmother.; Wasn't an old woman (like a grandmother).

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana