Answer: leapup

AnswerCrossword Clue
LEAPUP

Jump vertically

LEAPUP

Jump to one's feet

LEAPUP

React to a surprise, perhaps

LEAPUP
Arise with enthusiasm
LEAPUP
Leave one's feet
LEAPUPJump for joy
LEAPUPJump for joy perhaps,
LEAPUPArise quickly
LEAPUPAscend
LEAPUPLeave one's feet in a way