うではないか/うじゃないか => Let's go A; Why don't we A? N2
Miscellaneous
ないと,なくちゃ => Must do A N3
Needs, Requirement
ゃしない => Don't/Doesn't A (at all) N1
Will, Decision, Doing
もなんともない => Not A at all N1
Adjectival, Descriptions
を[禁「きん」]じ[得「え」]ない => Can't help but do A, can't hold back from A (emotional response to something) N1
Will, Decision, Doing
でなくてなんだろう => It's definitely A (and not something else) N1
Information, Report
てならない => Very A; Extremely A N2
Degree, Level, Amount
てかなわない => A is a problem N2
Adjectival, Descriptions
なくてはいけない => Must do A; have to A N4
Can, Should, Must
てしょうがない/てしかたがない => Very A; Really A; Extremely A N2
Degree, Level, Amount
ていられない => Cannot continue to A N2
Needs, Requirements
なくてもいい => Don't have to A N4
Can, Should, Must