The most common and most likely answer to this crossword clue is the 7 letter word DICTION
D
I
C
T
I
O
N
More clues leading to the result DICTION
- Democrat lies, forgetting opening in speech
- Speaking is a habit that’s lost nowadays
- Speech words to be taken down? No ta!
- Non-English issue about to be packed for delivery
- Recording dropped from presentation and speech
- Speech in the novel beginning differently
- Way of speaking of drug dependency without notice
- Verdict I only can bring in a manner of speaking
- Speech using 70 per cent of total vocabulary?
- Expression for ‘Police turning into criminal’
Buddy explains!

The straight part
We know that "delivery" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case delivery = diction.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 DICTION mean?
DICTION noun- Choice and use of words, especially with regard to effective communication.
- The effectiveness and degree of clarity of word choice and expression.