ちちぶじゃなかったです
知知武じゃなかったです
chichibujanakattadesu

Noun
Desu Copula

The polite, past negative form of ちちぶ

1. Didn't know martial arts.; Wasn't skilled in martial arts.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana