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epidemic

adjective
 
 
/ˌep.ɪˈdem.ɪk/

Definition

happening a lot and affecting many people: Poverty in this country has reached epidemic proportions . Crime and poverty are epidemic in the city.Passing on illness and causing disease
(Definition of epidemic adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of epidemic