Crossword Genius

Source of excitement (4-2)

Ross

I believe the answer is:

turn-on

'source of excitement' is the definition.
(I've seen this in another clue)

This is the entire clue.

I've seen this clue in The Guardian.
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.