〜ない functions the same way as an adjective, and so it can be conjugated to 〜なかった, 〜なくて, and so on. As far as I can tell, this is not case for 〜ぬ. Does it function as a standalone suffix, or is it able ...
I can say 歩いて渡る which translates to "to cross by walking". However, if I would like to say "I am not going to cross by walking, but by some other means", would I say 歩かないで渡る or 歩いて渡らない? There are ...