ずに済む => get by without doing ~ N2
に[難「むずか」]くない => It's not hard to A N1
Adjectival, Descriptions
~やむをえず  => unavoidable, no other way to do something N2
Necessity, obligation
なくて済む/ないで済む => get by without doing ~ N2
ずにすむ => Not doing A will suffice; Can get by without doing A N1
Need/Requirements
むき => facing towards N3
Direction
むしろ => rather; instead N2
Compare
...はむりだ... => impossible N4
Description
込む => to be crowded N3
…ず、…ず => No... but also no... N1
Explain
いずれにせよ => anyway N2
Situation
むきもある => There are people… N3
Of course