Crossword Genius

Endlessly regretting destruction (4)

Ross

I believe the answer is:

ruin

'destruction' is the definition.
(I know that ruin is a type of destruction)

'endlessly regretting' is the wordplay.
'endlessly' means to remove the last letter.
'regretting' becomes 'ruing' ('rue' can be a synonym of 'regret').
'ruing' with its final letter taken off is 'RUIN'.

(Other definitions for ruin that I've seen before include "Destroy; downfall" , "Destroy or bankrupt" , "Disaster, collapse" , "Building remains" , "Complete collapse or destruction" .)

I've seen this clue in The Mirror.
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