じゃないか

(Ja nai ka)

Used to confirm something, express a discovery, or strongly state an opinion.

Connection rules

ほら、あそこに猫ねこがいるじゃないか。

Hora, asoko ni neko ga iru ja nai ka.

Look, isn't there a cat over there?

「Spotting a stray cat」

一ひと人りで全部ぜんぶ食たべたわけじゃないじゃん。

Hitori de zenbu tabe ta wake ja nai jan.

It's not like I ate it all by myself, you know.

「Arguing with a sibling」