The most common and most likely answer to this crossword clue is the 11 letter word DEPRECATING
I've seen this crossword clue in The Times
D
E
P
R
E
C
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Buddy explains!
The straight part
We know that "Being disapproving" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case being disapproving = deprecating.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 DEPRECATING mean?
DEPRECATING verb- To belittle or express disapproval of.
- To declare something obsolescent; to recommend against a function, technique, command, etc. that still works but has been replaced.
- To pray against.
- To regret deeply.
- In manner that deprecates; insulting; belittling.