Cryptic crossword clue
Useless aristocrat, awfully vain inside 9

The most common and most likely answer to this crossword clue is the 9 letter word NONVIABLE

I've seen this crossword clue in Financial Times
N
O
N
V
I
A
B
L
E


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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 NONVIABLE mean?

NONVIABLE adjective
  1. Not viable: not capable of independent life; not practicable.

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