The most common and most likely answer to this crossword clue is the 3 plus 5 letter word NEW DELHI
I've seen this crossword clue in The Guardian
N
E
W
D
E
L
H
I
More clues leading to the result NEW DELHI
- Capital Henry put into Virgin store
- No good wheedling about capital
- Was familiar with where to buy cold meats: they say, in a big city
- Naked woman picked up in capital
- Naked girl reportedly in capital city
- Capital we held in another form
- Drunk held wine as capital
- According to Spooner, owed foolish person capital
- Lied when corruptly generating capital
- Capital husband invested in modern food store
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 = new delhi.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.