Full of zeal for a new trend (6)
I believe the answer is:
ardent
'full of zeal' is the definition.
(I've seen this before)
'a new trend' is the wordplay.
'new' is an anagram indicator.
'trend' anagrammed gives 'rdent'.
'a'+'rdent'='ARDENT'
'for' acts as a link.
(Other definitions for ardent that I've seen before include "Ranted, being passionate" , "Burning, passionate" , "full of zeal" , "Hot" , "Intensely enthusiastic" .)