leap up(redirected from leapt up)
To hop, jump, or stand up very quickly or suddenly. The child was leaping up trying to get her kite down from the tree. He leapt up from his chair in alarm when he heard the back door open. The cat leaped up and snatched the bird out of the air.
to jump upwards. The dog leapt up and licked my cheek. I leapt up so I could see over the wall for just a second.