From Longman Dictionary of Contemporary Englishhate campaignˈhate camˌpaign noun [countable]a series of things that a person or group does in order to upset or harm someone they hateExamples from the Corpushate campaign• The coroner, Michael Gwynne, described the racehate campaign as shocking.• The family says the hate campaign began then, leaving him fearing for his life.• The hate campaign began again, includingobscenephone calls.