Warn a beauty to keep a date? (8)

I believe the answer is:

admonish

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'warn' is the definition.
(synonyms)

'a beauty to keep a date?' is the wordplay.
'beauty' becomes 'dish' (slang term for an attractive person).
'to keep' indicates putting letters inside.
'a date?' becomes 'mon' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'dish' enclosing 'mon' is 'dmonish'.
'a'+'dmonish'='ADMONISH'

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(Other definitions for admonish that I've seen before include "Gently reprove" , "Reprove, warn" , "Chide, reprove" , "Scold, wag the finger at" , "Firmly reprimand" .)

I've seen this clue in The Sun.

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