The most common and most likely answer to this crossword clue is the 9 letter word AGREEMENT
I've seen this crossword clue in The Times
A
G
R
E
E
M
E
N
T
More clues leading to the result AGREEMENT
- Green team working in harmony
- Consistency in contract
- Wave to entertaining guys after a concert
- Soldiers protected by a welcome treaty
- Workers secured by a welcome deal
- Alpha males engaged in welcome correspondence
- A chap carrying on with English male in Deal
- Contract aide initially to welcome outside people
- Meet with anger, after scrapping Concord
- . A salute with soldiers in harmony
Buddy explains!
The straight part
We know that "concert" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case concert = agreement.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 AGREEMENT mean?
AGREEMENT noun- An understanding between entities to follow a specific course of conduct.
- A state whereby several parties share a view or opinion; the state of not contradicting one another.
- A legally binding contract enforceable in a court of law.
- (grammar) Rules that exist in many languages that force some parts of a sentence to be used or inflected differently depending on certain attributes of other parts.
- (chiefly in the plural) An agreeable quality.