noun

an intense and widely shared enthusiasm for something, especially one that is short-lived; a craze.

some regard green politics as no more than the latest fad

craze,vogue,trend,fashion,mode,enthusiasm,passion,infatuation,love,obsession,mania,rage,compulsion,fixation,fetish,weakness,fancy,taste,novelty,whim,fascination,preoccupation,thing,latest