Cryptic crossword clue
Sheep’s high-pitched noise, behaving violently 7

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

I've seen this crossword clue in The Guardian
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The straight part
We know that "behaving violently" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case behaving violently = ramping.
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 RAMPING mean?

RAMPING verb
  1. To behave violently; to rage.
  2. To spring; to leap; to bound, rear, or prance; to move swiftly or violently.
  3. To climb, like a plant; to creep up.
  4. To stand in a rampant position.
  5. To (cause to) change value, often at a steady rate.
  6. To adapt a piece of iron to the woodwork of a gate.
RAMPING noun
  1. A steady change in value.
  2. Violent behaviour; raging.

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