紋羽 もんぱ じゅうじゃなかったです
mon pa nijūjanakattadesu

Noun
Desu Copula

The polite, past negative form of 紋羽二重

1. Wasn't patterned/embroidered.; Wasn't double-layered (with a pattern).

Past/Perfective
Negative
Polite
Casual Register