Sprout would be a word for 'to shoot up suddenly'.
The answer to "to shoot up suddenly" is to Sky-Rocket, Sprout. It is a Growth spurt that children have during Puberty.
sky rocket
skyrocket
The phrase you're looking for is "pop."
"Suddenly" is an adverb.
The base word for the word "shooting" is "shoot".
soar, ascend, climbrise, shoot up
No, "suddenly" is not a compound word. It is an adverb formed from the adjective "sudden."
Suddenly is an adverb and its comparative is formed by putting the word "more" in front of it.
A word that means to depart suddenly is "plump" or "plumped"
The word that means to draw back suddenly is "recoil."
unsudden