The most common and most likely answer to this crossword clue is the 9 letter word ENUNCIATE
I've seen this crossword clue in The Guardian
E
N
U
N
C
I
A
T
E
More clues leading to the result ENUNCIATE
- Clearly pronounce a tune nice for broadcasting
- Articulate English sister spies tortoiseshell
- Niece and aunt trained to talk with precision
- Composing a nice tune, say?
- Utter backing of Church includes devoted type, one consumed
- English sister had tour around India, say
- Say, aunt and niece maybe
- Aunt and niece funny and articulate
- Say, oriental spies protect a lady, in order to escape at first
Buddy explains!

The straight part
We know that "Articulate" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case articulate = enunciate.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 ENUNCIATE mean?
ENUNCIATE verb- To make a definite or systematic statement of.
- To announce, proclaim.
- To articulate, pronounce.
- To make sounds clearly.