匿名 とくめい掲示 けいじ いたじゃありませんでした
tokumeikeiji itaja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 匿名掲示板

1. Was not an anonymous message board.; Was not a nameless bulletin board.

Past/Perfective
Negative
Polite
Terminal Form
Internet