Noisome girl, vacant, revitalised for new term (9)
I believe the answer is:
neologism
'new term' is the definition.
(I've seen this before)
'noisome girl vacant revitalised' is the wordplay.
'vacant' means to remove the middle letters (a vacant or emptied out form of the word).
'revitalised' indicates an anagram.
'girl' with its centre removed is 'gl'.
'noisome'+'gl'='noisomegl'
'noisomegl' is an anagram of 'NEOLOGISM'.
'for' is the link.
(Other definitions for neologism that I've seen before include "Newly coined word" , "Brexit maybe" , "coinage" , "New word or phrase" , "Newly-coined word or expression" .)