...ぬ => Not (Negative) N3
Emphasize negative meaning
~ぬうちに => While not....; before... N1
Time
... だけの ... => have enough to... N2
Emphasis on degree
ぬきにして/~ぬきで => Exclude A; Stop/end A; Without A N2
Miscellaneous
ぬまでも => not to say; although it does not reach the level of ~ N1
Description
~ぬばかり => As if; as though N1
Situation
~ぬまに => without one's knowledge, without noticing N1
Time
わけても => Especially N1
Emphasize
ものの => but, although N2
ものの => but, although N2
Things do not match the prediction
...そのもの => Myself... N2
Demonstrate by example
~とも~ともつかぬ/ともつかない      => whether A or B (shows doubt or uncertainty between the two things) N1