Not showing enthusiasm for new vintage from Spain (8)
I believe the answer is:
negative
'not' is the definition.
(thesaurus)
'new vintage from spain' is the wordplay.
'new' indicates an anagram.
'from' says to put letters next to each other.
'spain' becomes 'e' (abbreviation for Espana**).
'vintage' anagrammed gives 'negativ'.
'negativ'+'e'='NEGATIVE'
'showing enthusiasm for' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for negative that I've seen before include "Reply of denial" , "Film showing black and white tones reversed" , "Opposite of affirmative" , "Photographic image with tones reversed" , "veto" .)