たまねぎじゃなかったです
玉ねぎじゃなかったです
tamanegijanakattadesu

Noun
Desu Copula

The polite, past negative form of たまねぎ

1. Wasn't an onion.; It wasn't an onion.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana