The most common and most likely answer to this crossword clue is the 9 letter word ASSONANCE
A
S
S
O
N
A
N
C
E
More clues leading to the result ASSONANCE
- Article penned by idiot formerly in sound agreement
- Dimwit previously stole ‘A New Feature of Poetry‘
- . Donkey’s working cane crush to loose juice perhaps?
- As lad dances unclad, this is picked up
- Sound correspondence old granny kept in broken cases
- Idiot at one point pens article, generating correspondence
- Guarantee working for old city which sounds similar
- Sound correspondence old granny kept in fancy cases
Buddy explains!

The straight part
We know that "correspondence" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case correspondence = assonance.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 ASSONANCE mean?
ASSONANCE noun- The repetition of similar or identical vowel sounds (though with different consonants), usually in literature or poetry.