What does じゃないじゃん mean? Does this count as a double negative?


[![enter image description
here](https://i.stack.imgur.com/zJzH4.png)](https://i.stack.imgur.com/zJzH4.png)

じゃないじゃん from context she seems to be it's the time to support that girl?

and "I don't have more free time. Pull yourself together"




In an uncontracted polite form, it would be 応援している場合では **ない** では **ない** ですか
and this is a double negative in the sense that it contains two negative
words, but not the kind in which they cancel out each other. A literal English
translation that retains the double negative structure would be something
like:

> Do you **not** think you should **not** be cheering for that girl?

But since じゃん comes at the end of a sentence, it should be easier to
understand it if you simply saw it as something like "right?" or "don't you
think?" that you put at the end of a sentence in English.

