べらぼうじゃありませんでした
箆棒じゃありませんでした
berabōjārimasendeshita

Noun
Desu Copula
na-Adjective

The polite, past negative form of べらぼう

1. Was not skillful.; Was not good at it.; Was not talented.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana