Etymology: (1425–75; late ME fureor < MF < L: a raging; see fury, -or1)
Definition of 'furor'
Princeton's WordNet
1. (noun)fad, craze, furor, furore, cult, rage an interest followed with exaggerated zeal "he always follows the latest fads"; "it was all the rage that season"
2. (noun)furor, furore a sudden outburst (as of protest)