よそじゃありませんでした
余所じゃありませんでした
yosojārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of よそ

1. It wasn't elsewhere.; It wasn't anywhere else.; It wasn't here.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana