The most common and most likely answer to this crossword clue is the 8 letter word COMPETES
I've seen this crossword clue in The Guardian
C
O
M
P
E
T
E
S
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 COMPETES mean?
COMPETES verb- To be in battle or in a rivalry with another for the same thing, position, or reward; to contend
- To be in a position in which it is possible to win or triumph.
- To take part in a contest, game or similar event