筋違 すじちがいじゃなかったです
sujichigaijanakattadesu

Noun
Desu Copula
na-Adjective
no-Adjective

The polite, past negative form of 筋違い

1. Wasn't a mismatch.; Wasn't wrong.; Wasn't a mistake.

Past/Perfective
Negative
Polite
Casual Register