Crossword Genius

Surprise promising young actress with time up (7)

Ross

I believe the answer is:

startle

I'm a little stuck... Click here to teach me more about this clue!

'surprise' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for startle that I've seen before include "Shock, alarm" , "Take (someone) aback" , "Surprise greatly, alarm" , "Make jump" , "Frighten suddenly" .)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.