The most common and most likely answer to this crossword clue is the 9 letter word ASSESSING
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result ASSESSING
Buddy explains!

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 ASSESSING mean?
ASSESSING verb- To determine, estimate or judge the value of; to evaluate
- To impose or charge, especially as punishment for an infraction.
- To calculate and demand (the tax money due) from a person or entity.
- Action of the verb to assess; assessment.