骨の折れる

arduous

→ 骨
phrase Rare #32,515
arduous Describes something difficult, demanding, or tiring. It is commonly used before nouns, such as 骨の折れる仕事 (an arduous job).
JA: この計画は思った以上に骨の折れる仕事だった。
EN: This project was more arduous than I expected.

骨の折れる闘争が終わり癒し静けさを襲う

The grueling struggle ends, and a healing stillness washes over him.

— バーフバリ 伝説誕生 (2015)

彼はただきついこと難しいこと骨の折れることを全て自然に避けるのです

He simply avoids anything tough, difficult, or demanding as a matter of course.

すこしでも骨の折れるようなことはごめんだ

I want no part of anything even remotely strenuous.