The most common and most likely answer to this crossword clue is the 4 plus 5 letter word DOWN UNDER
I've seen this crossword clue in Financial Times
D
O
W
N
U
N
D
E
R
More clues leading to the result DOWN UNDER
- Devoted woman with more frumpy clothing I left a long way away
- Party with sister Ruby, perhaps, back in Australia?
- Provincial county short of land for deportees at one time?
- Crashed, falling short of the Antipodes
- Depressed? Less than in Perth, possibly
- New, odd urn destroyed in Australia perhaps
- Furbelow in the Antipodes!
- Feathers and foreign articles from the other side of the world
Buddy explains!

The straight part
We know that "other side of the world" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case other side of the world = down under.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.