Cryptic crossword clue
Reformed buccaneer having run away to square sins? 7

The most common and most likely answer to this crossword clue is the 7 letter word EXPIATE

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

The straight part
We know that "to square sins" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to square sins = expiate.
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 EXPIATE mean?

EXPIATE verb
  1. To atone or make reparation for.
  2. To make amends or pay the penalty for.
  3. To relieve or cleanse of guilt.
  4. To purify with sacred rites.
  5. To wind up, bring to an end.

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