Crossword Genius

Keep quiet over book (8)

Ross

I believe the answer is:

preserve

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'keep' is the definition.
(preserving is a kind of keeping)

'quiet over book' is the wordplay.
'quiet over' becomes 'p' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'book' becomes 'reserve' ('reserve' can be a synonym of 'book').
'p'+'reserve'='PRESERVE'

Can you help me to learn more?

(Other definitions for preserve that I've seen before include "put on the table in advance?" , "Keep (something) safe" , "Particular interest" , "Jam or marmalade" , "area where game is held" .)

I've seen this clue in The Guardian.
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