The most common and most likely answer to this crossword clue is the 6 letter word MADRID
M
A
D
R
I
D
More clues leading to the result MADRID
- Wild and free in Spanish city
- City girl calling in medic
- Capital city, wild and free
- Foolish going on short journey in European capital
- Irate daughter touring Rhode Island city
- Doctor admired drug-free capital
- Crackpot free to obtain capital
- It’s senseless to dispose of capital
- Not all there, free capital
- Wild and free in Spain
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 = madrid.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.