こうかくじゃなかったです
磽确じゃなかったです
kōkakujanakattadesu

Noun
Desu Copula
na-Adjective

The polite, past negative form of こうかく

1. Wasn't certain.; Wasn't sure.; Wasn't definite.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana