Cryptic crossword clue
Son thus stops toning down debauchery 11

The most common and most likely answer to this crossword clue is the 11 letter word DISSOLUTION

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Buddy explains!

The straight part
We know that "debauchery" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case debauchery = dissolution.
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 DISSOLUTION mean?

DISSOLUTION noun
  1. The termination of an organized body or legislative assembly, especially a formal dismissal.
  2. Disintegration, or decomposition into fragments.
  3. Dissolving, or going into solution.
  4. The quality of being dissolute.

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