The most common and most likely answer to this crossword clue is the 10 letter word PROMINENCE
I've seen this crossword clue in The Guardian
P
R
O
M
I
N
E
N
C
E
More clues leading to the result PROMINENCE
Buddy explains!
The straight part
We know that "Renown" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case renown = prominence.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 PROMINENCE mean?
PROMINENCE noun- The state of being prominent: widely known or eminent.
- Relative importance.
- A bulge: something that bulges out or is protuberant or projects from a form.
- (topography) Autonomous height; relative height or prime factor; a concept used in the categorization of hills and mountains.