Ruin the opening? (7)

I believe the answer is:

undoing

I believe this clue is a double definition.

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

'opening?' is the second definition.
(opening is a kind of undoing)

'the' acts as a link.

(Other definitions for undoing that I've seen before include "Cause of ruin" , "Taking apart" , "(A person's) ruin or downfall" , "Ruin - disaster" .)

I've seen this clue in The Globe and Mail, The Telegraph, The Irish Independent, The Guardian and The Sun.

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.