The most common and most likely answer to this crossword clue is the 9 letter word ANTIPODES
I've seen this crossword clue in The Guardian
A
N
T
I
P
O
D
E
S
More clues leading to the result ANTIPODES
- A despot in foreign, diametrically opposite territories
- Coming across page, not fond of Shelley? The exact opposite
- Visited by Puck in twenty minutes?
- Work spade into lands down south
- Does it pan out where diggers are found?
- Extremes in a despot, remarkable
- Posted in a mobile home for Anzacs
- Down under article rewards gripping lyric
- Worker poised to move down under
- A new suggestion on poems in Australia for example
Buddy explains!

The straight part
We know that "Extremes" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case extremes = antipodes.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.
What does ANTIPODES mean?
ANTIPODES noun- Something directly opposite or diametrically opposed.
- The place on the diametrically opposite side of the earth from a given point.
- The Southern Hemisphere.
- Australia and New Zealand.
- (by extension) The opposite of something.