The most common and most likely answer to this crossword clue is the 7 letter word COMPACT
I've seen this crossword clue in The Times
C
O
M
P
A
C
T
More clues leading to the result COMPACT
Buddy explains!
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 = compact.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 COMPACT mean?
COMPACT noun- An agreement or contract.
- A small, slim folding case, often featuring a mirror, powder and a powderpuff; that fits into a woman's purse or handbag, or that slips into one's pocket.
- A broadsheet newspaper published in the size of a tabloid but keeping its non-sensational style.
- To make more dense; to compress.
- To unite or connect firmly, as in a system.
- Closely packed, i.e. packing much in a small space.
- Having all necessary features fitting neatly into a small space.
- (of a set in an Euclidean space) Closed and bounded.
- (of a set) Such that every open cover of the given set has a finite subcover.
- Brief; close; pithy; not diffuse; not verbose.
- Joined or held together; leagued; confederated.
- Composed or made; with of.