べからざる => Cannot A N1
Potential, Possibility
~べからざる => must not; should not; do not ~ N1
Confirm
まんざらでもない => not so bad... N3
Evaluate
~いざ~となると / いざ~となれば / いざ~となったら => When it comes to; in such a case; if that happens N1
Evaluate
ござる/ございます => Have~ N4
Honorifics
~ならいざしらず      => I don't know about … but; it may be possible for … but ~ ... N1
わざと => on purpose; intentionally ~ N3
でござる/でございます => By, with… N4
Honorifics
わざわざ => to go to the trouble of; to go out of one's way to ~ N3
いざしらず => I don't know about … but; it may be possible for … but ~ ... N3
Innocent
まんざら…でもない/ではない => (not) altogether; (not) wholly N3
Evaluate
でございます => to be (honorific) N4