Cryptic crossword clue
Grew in volume during a bad-mannered broadcast 7

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

I've seen this crossword clue in The Guardian
A
C
C
R
U
E
D

Buddy explains!

The straight part
We know that "Grew" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case grew = accrued.
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 ACCRUED mean?

ACCRUED verb
  1. To increase, to rise
  2. To reach or come to by way of increase; to arise or spring up because of growth or result, especially as the produce of money lent.
  3. To be incurred as a result of the passage of time.
  4. To accumulate
  5. To become an enforceable and permanent right.
ACCRUED adjective
  1. Having increased through accrual; having risen over time or due to financial transactions.

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