The most common and most likely answer to this crossword clue is the 11 letter word CONNOISSEUR
I've seen this crossword clue in The Daily Telegraph
C
O
N
N
O
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S
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More clues leading to the result CONNOISSEUR
- Person relishing scam developed neurosis
- Expert cruises, on and on, at sea
- Censorious man ultimately condemned authority
- Authority on courses in for training
- Prisoner has unusual neurosis, I’m informed
- Nero’s cousin, represented as an expert judge
- Professional cheat on racket implicating senate at ancient city
Buddy explains!
The straight part
We know that "Authority" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case authority = connoisseur.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 CONNOISSEUR mean?
CONNOISSEUR noun- A specialist in a given field whose opinion is highly valued, especially in one of the fine arts or in matters of taste