The most common and most likely answer to this crossword clue is the 9 letter word CONVERGES
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The straight part
We know that "is reaching agreement" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case is reaching agreement = converges.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 CONVERGES mean?
CONVERGES verb- Of two or more entities, to approach each other; to get closer and closer.
- Of a sequence, to have a limit.
- Of an iterative process, to reach a stable end point.