ちゃんと => Clear, neat, dignified, complete N3
Result status
ちゃんとする => Serious, tidy, complete N3
Result status
んじゃ => If ... then... N4
Condition (hypothetical condition)
んじゃない => can not, impossible to... N4
Ban
じゃありません => not to be N5
Emphasize negative meaning
んじゃなかったか => shouldn't have... N4
Regret
んじゃないか => right? isn't it? let's~; confirmation N4
Confirm
んじゃない => confirmation of information; express surprise towards listener N4
Speculation
はもちろん => not to mention; not only … but also ~ N3
じゃありませんでした => was not, were not N5
Emphasize negative meaning
まんいち => emergency; unlikely event​; by some chance; by some possibility N2
Assumed conditions
そうじゃありません => Not like that, Not that way N5
Confirm