Cryptic crossword clue
Grant almost all gone, value of cash changes 9

The most common and most likely answer to this crossword clue is the 9 letter word VOUCHSAFE

I've seen this crossword clue in Financial Times
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Buddy explains!

The straight part
We know that "Grant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case grant = vouchsafe.
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 VOUCHSAFE mean?

VOUCHSAFE verb
  1. To graciously give, to condescendingly grant a right, benefit, outcome, etc.; to deign to acknowledge.
  2. To receive or accept in condescension.
  3. To disclose or divulge.

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