Reinfect variety that's wild (8)
I believe the answer is:
frenetic
'that's wild' is the definition.
(I've seen this before)
'reinfect variety' is the wordplay.
'variety' indicates an anagram.
'reinfect' is an anagram of 'FRENETIC'.
(Other definitions for frenetic that I've seen before include "Fast and wild" , "Re-infect, being quite frenzied" , "Hectic" , "Demented" , "Frantic, frenzied" .)