Crossword Genius

Charmer apt to make a lot of noise (5)

Ross

I believe the answer is:

siren

I'm a little stuck... Click here to teach me more about this clue!

'charmer' is the definition.
(I've seen this in another clue)

'apt to make a lot of noise' is the wordplay.
I cannot quite understand how this works, but
'make' could be 'sire' (siring is a kind of making) and 'sire' is located in the answer.
A single letter 'n' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for siren that I've seen before include "Temptress - warning device" , "Alarm; temptress" , "Seductive woman" , "Hooter - dangerous woman?" , "Loud whistle or dangerous woman" .)

I've seen this clue in the Evening Standard.
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