Quaint boiled sweets unwrapped (4)
I believe the answer is:
twee
'quaint' is the definition.
(both can mean sentimental or old-fashioned)
'boiled sweets unwrapped' is the wordplay.
'boiled' indicates anagramming the letters (letters cooked or boiled into a new form).
'unwrapped' means to look at the middle letters (the letters which wrap the word are removed).
The middle letters of 'sweets' are 'weet'.
'weet' with letters rearranged gives 'TWEE'.
(Other definitions for twee that I've seen before include "Affected quaint" , "Over-pretty, sentimental" , "Excessively cute" , "Rather too pretty" , "Excessively sweet" .)