The most common and most likely answer to this crossword clue is the 6 letter word UNISON
I've seen this crossword clue in The Times
U
N
I
S
O
N
More clues leading to the result UNISON
- Agreement boy should go to HE institution
- Concert with possible Oxbridge dons — not outside
- Universities working as one
- Educational establishment's working agreement
- Agreement thus broken ultimately by academic institution
- College boy’s agreement
- Colleges in functioning state complete agreement
- Concert in heart of Brunei hasn’t been cancelled
- Harmony when worker’s organisation accepts old Bob
- United Nations is working in simultaneous action
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The straight part
We know that "agreement" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case agreement = unison.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 UNISON mean?
UNISON noun- (acoustics) Identical pitch between two notes or sounds; the simultaneous playing of notes of identical pitch (or separated by one or more octaves).
- (acoustics) A sound or note having the same pitch as another, especially when used as the base note for an interval; a unison string.
- The state of being in harmony or agreement; harmonious agreement or togetherness, synchronisation.