The most common and most likely answer to this crossword clue is the 6 letter word PRAGUE
I've seen this crossword clue in Financial Times
P
R
A
G
U
E
More clues leading to the result PRAGUE
- Runs for Lima during epidemic in capital
- Quiet street abroad crossing a grand city
- Exercise, having ingested rich sauce somewhere in Czech Republic
- Voting system fit for European city
- Priest, unclear, against leaving city
- Capital parking – argue slight change needed
- Couple with a viol from Shetland for Mozart symphony
- André Gide initially appears in quiet street in French capital
- Pair contracted fever in capital
- Capital German company invested in Leith?
Buddy explains!
The straight part
We know that "Capital" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case capital = prague.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.