ないものでもない/ないでもない => A is not completely impossible N1
Need/Requirements
でござる/でございます => By, with… N4
Honorifics
~ないでください => Please don't do~ N5
Asking and Telling
せいで/せいか => Because of A, B N3
Reason, Result, Response
というものではない => Not sure, not means N2
Information, Report
までもない => It's not necessary for A N1
Need/Requirements
どころではない => Its not A N2
Contrast,Surprise
ないまでも => Even if A isn't done N1
(Not)only , (Not) even
もしないで => Even though (subject) doesn't/don't A N1
Contrast/Surprise
ずにはおかない/ないではおかない => Will definitely A, N1
Will, Decision, Doing
ずにはすまない/ないではすまない => A must be done N1
Potential, Possibility
ついでに => Since A happened/is going to happen, B N3
Information, Report