The most common and most likely answer to this crossword clue is the 9 letter word DETHRONES
I've seen this crossword clue in Independent
D
E
T
H
R
O
N
E
S
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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 DETHRONES mean?
DETHRONES verb- To depose; to forcibly relieve a monarch of the monarchy.
- To remove any governing authority from power.
- To remove from any position of high status or power.
- To remove (something) from a position of power or paramount importance.