Cryptic crossword clue
Leaving number two inside, poorly sponged 10

The most common and most likely answer to this crossword clue is the 10 letter word DEPOSITING

I've seen this crossword clue in The Guardian
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Buddy explains!

The straight part
We know that "Leaving" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case leaving = depositing.
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 DEPOSITING mean?

DEPOSITING verb
  1. To lay down; to place; to put.
  2. To lay up or away for safekeeping; to put up; to store.
  3. To entrust one's assets to the care of another. Sometimes done as collateral.
  4. To put money or funds into an account.
  5. To lay aside; to rid oneself of.
DEPOSITING noun
  1. Deposition

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