The most common and most likely answer to this crossword clue is the 8 letter word DIALOGUE
I've seen this crossword clue in Financial Times
D
I
A
L
O
G
U
E
More clues leading to the result DIALOGUE
- Discussion expected to impress one with a record
- Face villain failing to initiate exchange
- Agile duo animated in discussion
- Face villain with no right to make conversation
- Put up with old man taking year to finally resolve discussion
- Look in a guide about communication
- Discussion intended to produce agreement to help left-leaning poet
- Conversation piece?
- European Union move set up for exchange
- ‘Ring, ring’, done in say, reversed exchange
Buddy explains!

The straight part
We know that "Agile duo" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case agile duo = dialogue.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 DIALOGUE mean?
DIALOGUE noun- A conversation or other form of discourse between two or more individuals.
- (authorship) In a dramatic or literary presentation, the verbal parts of the script or text; the verbalizations of the actors or characters.
- A literary form, where the presentation resembles a conversation.
- A dialogue box.
- To discuss or negotiate so that all parties can reach an understanding.
- To put into dialogue form.
- To take part in a dialogue; to dialogize.