JMdict: 1627350

骨が折れる 【ほねがおれる】

  1. [exp,v1] to require much effort; to be hard to do; to be bone-breakingly hard
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
骨 Skeleton, Bone, Remains, Frame コツ ほね
折 Fold, Break, Fracture, Bend, Yield, Submit セツ, シャク お.る, おり, お.り, -お.り, お.れる