The most common and most likely answer to this crossword clue is the 5 plus 5 letter word ADDIS ABABA
I've seen this crossword clue in Financial Times
A
D
D
I
S
A
B
A
B
A
More clues leading to the result ADDIS ABABA
- Combine with two sailors in an investment producing capital
- A doctor and a couple of bachelors swallowing up one’s capital
- A theologian is with a couple of graduates in capital city
- Commercial said fancy cake is capital!
- Join savings scheme used by graduates in African capital
- Capital gains group holding one ace following split
- Put together investment — rum thing generating capital
- African city total is a pair of graduates
- Promotion’s said to be useless by scholars in capital city
- A theologian is given a couple of degrees in African capital
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 = addis ababa.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.