Cryptic crossword clue
Doing really well with a spreadsheet? 9

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

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

The straight part
We know that "D/o/ing really well" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case d/o/ing really well = excelling.
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 EXCELLING mean?

EXCELLING verb
  1. To surpass someone or something; to be better or do better than someone or something.
  2. To be much better than others.
  3. To exceed, to go beyond

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