Crossword Genius

Shocked by a muffled "It became boring" (8)

Ross

I believe the answer is:

appalled

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

'shocked' is the definition.
('appal' can be a synonym of 'shock')

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for appalled that I've seen before include "Greatly horrified" , "Aghast, horrified" , "Deeply shocked, filled with dismay" , "Mortified" , "Scandalised" .)

I've seen this clue in the Evening Standard.
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.