よそじゃなかったです
余所じゃなかったです
yosojanakattadesu

Noun
Desu Copula
no-Adjective

The polite, past negative form of よそ

1. It wasn't elsewhere.; It wasn't somewhere else.; It wasn't in another place.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana