1.
standing on tiptoe, stretching up
The physical act of standing on tiptoe or stretching one's body upward to reach something or see over something.
背伸びして棚の上に手を伸ばした。
I stood on tiptoe and reached for the top of the shelf.
子どもが背伸びをして窓の外をのぞいている。
The child is standing on tiptoe, peeking out the window.
朝、大きく背伸びをすると気持ちがいい。
It feels good to have a big stretch in the morning.
2.
overreaching, trying to appear bigger or better than one is
Figuratively, trying to act beyond one's actual ability, status, or means. Attempting to appear more mature, sophisticated, or capable than one really is.
背伸びせずに自然体でいたい。
I want to be natural and not try to be something I'm not.
高いレストランに行くのは少し背伸びだった。
Going to an expensive restaurant was a bit of a stretch for us.
若い頃は背伸びして大人ぶっていたが、今は等身大の自分を大切にしている。
When I was young I used to act more grown-up than I was, but now I value being my true self.
USAGE NOTE:
The figurative sense (sense 2) is very common in everyday conversation. It is not necessarily negative — sometimes 背伸び is seen as a healthy aspiration, though it more often implies overreaching.
COMMON COLLOCATIONS:
- 背伸びをする (stand on tiptoe; overreach)
- 背伸びしない (not overreach, be natural)
- 少し背伸び (a little bit of a stretch)
SIMILAR WORDS:
- つま先立ち: standing on tiptoe (purely physical)
- 無理をする: push oneself too hard, overdo it (stronger negative nuance)