Hackneyed is an adjective. Used in a derogatory way to describe something unoriginal and oft repeated.
Though more widely known as a term meaning clichéd or pedestrian, 'Hackneyed' also means to be knifed/stabbed or generally attacked - often by a gang or group of kids. Term originated from the reputation of the London borough of Hackney and its Jack the Ripper connotations.
(Verb: to hackney)