Cryptic crossword clue
Disapproved of jerk, one unknown character whined about 10

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

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Buddy explains!

The straight part
We know that "Disapproved of" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case disapproved of = criticized.
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 CRITICIZED mean?

CRITICIZED verb
  1. To find fault (with something).
  2. To evaluate (something), assessing its merits and faults.

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