JMdict: 1472770

背伸び 【せのび】

  1. [n,vs,vi] standing on tiptoe and stretching one's back to make oneself taller; stretching oneself
  2. [n,vs,vi] overreaching oneself; overstretching oneself; trying to do something beyond one's ability; pushing to the limit
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
背 Stature, Height, Back, Behind, Disobey, Defy, Go Back On, Rebel ハイ せ, せい, そむ.く, そむ.ける
伸 Expand, Stretch, Extend, Lengthen, Increase シン の.びる, の.ばす, の.べる, の.す

Words often seen with this one: (experimental feature)

無理 (11)