Temporary craze (3)
I believe the answer is:
fad
'temporary craze' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for fad that I've seen before include "A craze, usually passing" , "Particular like or dislike, or a craze" , "A craze or current vogue" , "Short-lived craze" , "Affectation" .)