じゃないか / ではないか => right? isn't it? N3
Confirm
じゃないか => right? isn't it? let's~; confirmation N4
Speculation
じゃないか / ではないか => right?; isn't it? (Criticism) N3
Criticize
んじゃないか => right? isn't it? let's~; confirmation N4
Confirm
じゃないか / ではないか => right? isn't it? let's~; confirmation N3
Surprised
んじゃなかったか => shouldn't have... N4
Regret
じゃないが => It's not that... but... N4
How to say the beginning
んじゃない => can not, impossible to... N4
Ban
ようではないか/ようじゃないか => Let’s do (something); Why don’t we ~ N2
んじゃ => If ... then... N4
Condition (hypothetical condition)
うではないか/うじゃないか => Let's go A; Why don't we A? N2
Miscellaneous
んじゃない => confirmation of information; express surprise towards listener N4
Speculation