The most common and most likely answer to this crossword clue is the 10 letter word DETERMINES
I've seen this crossword clue in Financial Times
D
E
T
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R
M
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More clues leading to the result DETERMINES
Buddy explains!

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 DETERMINES mean?
DETERMINES verb- To set the boundaries or limits of.
- To ascertain definitely; to figure out, find out, or conclude by analyzing, calculating, or investigating.
- To fix the form or character of; to shape; to prescribe imperatively; to regulate; to settle.
- To fix the course of; to impel and direct; with a remoter object preceded by to.
- To bring to a conclusion, as a question or controversy; to settle authoritative or judicial sentence; to decide.
- To resolve on; to have a fixed intention of; also, to cause to come to a conclusion or decision; to lead.
- To define or limit by adding a differentia.
- To bring to an end; to finish.