でんじょすいかじゃなかったです
田助すいかじゃなかったです
den josuikajanakattadesu

Noun
Desu Copula

The polite, past negative form of でんすけすいか

1. Didn't help.; Didn't assist.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana