いぼうきくさじゃなかったです
疣浮草じゃなかったです
ibōkikusajanakattadesu

Noun
Desu Copula

The polite, past negative form of いぼうきくさ

1. It wasn't water hyacinth.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana