Cryptic crossword clue
I say

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

I've seen this crossword clue in Independent
A
N
N
O
U
N
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R


Buddy explains!

The straight part
We know that ", woman has decapitated nightclub employee (9)" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case , woman has decapitated nightclub employee (9) = announcer.
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 ANNOUNCER mean?

ANNOUNCER noun
  1. One who makes announcements.

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