godan verb (-ru), intransitive verb
stretch up; stand on tiptoe; reach up
Describes the action of stretching one's body upward, often by standing on tiptoes or extending the arms, to reach something high or see over an obstacle.
棚の上の本を取ろうと伸び上がった。
I stretched up to reach the book on the shelf.
子供たちは背伸びして伸
The children stood on tiptoe, stretching up to see the stage.