Crossword Genius

Completely finished novel we drove to hand in (4,3,4,4)

Ross

I believe the answer is:

over and done with

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'completely finished' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'novel we drove to hand in' is the wordplay.
'novel' is an anagram indicator (letters in a new or novel order).
'we'+'drove'+'to'+'hand'+'in'='wedrovetohandin'
'wedrovetohandin' is an anagram of 'OVER AND DONE WITH'.

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I've seen this clue in The Daily Express.
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