The most common and most likely answer to this crossword clue is the 10 letter word GOING-OVER
I've seen this crossword clue in Financial Times
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More clues leading to the result GOING-OVER
Buddy explains!
The straight part
We know that "Thrashing/falling down" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case thrashing/falling down = going-over.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GOING-OVER mean?
GOING-OVER noun- An inspection, examination, review, or investigation.
- An overhaul.
- A severe, thorough scolding.
- A sound thrashing, beating.