Answer: shootup

AnswerCrossword Clue
SHOOTUPGrow dramatically
SHOOTUPIncrease rapidly
SHOOTUPMachine-gun
SHOOTUPGrow rapidly.
SHOOTUPGrow rapidly
SHOOTUPSprout
SHOOTUPSkyrocket
SHOOTUPGrow by leaps and bounds
SHOOTUPHave a growth spurt