Crossword Genius

First gag the actors nerves? (11)

Ross

I believe the answer is:

stagefright

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

'actors nerves?' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'first gag the' is the wordplay.
'first gag the' anagrams to 'STAGEFRIGHT'.
Though, I am not clear how this is indicated.

Can you help me to learn more?

I've seen this clue in The Irish Independent.
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.