The most common and most likely answer to this crossword clue is the 9 letter word SULTANATE
I've seen this crossword clue in The Times
S
U
L
T
A
N
A
T
E
More clues leading to the result SULTANATE
- Late aunts done for in Oman?
- Muslim land in east joining assembly of UN at last
- Aunts et al badly treated in Muslim autocracy
- A last tune played in Muslim territory
- Eccentric late aunt’s land
- Lawrence stood behind female ruler in queendom
- Country fruit, dried before half-term
- Late aunts perished in Muslim land
- A US talent travelling around Brunei, say
- Dried fruit starts to top exports for Brunei, perhaps
Buddy explains!
The straight part
We know that "Oman" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case oman = sultanate.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.