The most common and most likely answer to this crossword clue is the 7 letter word TOSS-UP
I've seen this crossword clue in The Guardian
T
O
S
S
-
U
P
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 TOSS-UP mean?
TOSS-UP noun- A decision in which neither choice is clearly favorable or unfavorable, or for which the outcome does not matter.
- Either of two outcomes that are equally likely.
- The toss of a coin used to decide some issue.