Provoke trendy lover (7)
I believe the answer is:
inflame
'provoke' is the definition.
(inflaming is a kind of provoking)
'trendy lover' is the wordplay.
'trendy' becomes 'in'.
'lover' becomes 'flame' (I've seen this in other clues).
'in'+'flame'='INFLAME'
(Other definitions for inflame that I've seen before include "Incite" , "Make (a situation) worse" , "Intensify, aggravate" , "Excite passionate feelings" , "Exacerbate" .)