背に腹はかえられない

せにはらはかえられない

not able to escape an urgent problem without making some sacrifice

腹背

ふくはい

back and front, opposition in the heart

背腹軸

はいふくじく

dorsal-ventral axis

はえぬき

Haenuki (variety of rice)

入れ替え

いれかえ

replacement, substitution, change

替え

かえ

change, alteration, substitute, spare, proxy

引き替えに

ひきかえに

conversely

面従腹背

めんじゅうふくはい

pretending to obey but secretly betraying (someone)

それに引き替えて

それにひきかえて

in contrast, on the contrary, on the other hand

入れ替える

いれかえる

to replace; to substitute; to shift; to change places

植え替え

うえかえ

transplanting, transplantation

墓に布団は着せられぬ

はかにふとんはきせられぬ

it is too late to show filial piety once your parents are dead

腹ごしらえ

はらごしらえ

having a meal (before doing something), fortifying oneself with a meal

蒔かぬ種は生えぬ

まかぬたねははえぬ

Nothing comes of nothing

替え刃

かえば かえは

spare or new razor blade

替え着

かえぎ

change of clothing, spare clothing

鞍替え

くらがえ

changing one's stance, changing loyalties, changing jobs, switching horses

表替え

おもてがえ

refacing (tatami) mats

替えバネ

かえバネ

Replacement spring