...はむりだ... => impossible N4
Description
むき => facing towards N3
Direction
…にはむりがある => difficult to do; is unreasonable / unrealistic / impossible N3
Vague
むしろ => rather; instead N2
Compare
込む => to be crowded N3
なくて済む/ないで済む => get by without doing ~ N2
むきもある => There are people… N3
Of course
ずに済む => get by without doing ~ N2
~すむことではない => ~ is not enough to solve the problem; cannot be resolved by ~ N1
Emphasize the negative meaning
より(も)むしろ => rather; instead; better ~ N3
むりに => Try to..., make an effort to... N3
Necessity, obligation
て済む => sufficient by; no problem to; resolve by ~ N3