The most common and most likely answer to this crossword clue is the 7 letter word RELIEVO
I've seen this crossword clue in Financial Times
R
E
L
I
E
V
O
More clues leading to the result RELIEVO
- Left backing, capturing rest of outstanding piece
- Finished up accepting fiction – outstanding work
- Outstanding piece of fiction concerning upset on borders
- Outstanding work on old shield in retreat
- Wicked lie over prominent design
- Carving on old mask seen from other side
- Finished up accepting story in stand-out work
Buddy explains!

The straight part
We know that "Outstanding work" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case outstanding work = relievo.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 RELIEVO mean?
RELIEVO noun- Relief (surface carving)