SERIAL

(REPEATED) [adjective] [before noun; not gradable] - repeated, one after anotherA serial killer/murderer is a person who murders many people one after another.She wrote a thriller about a brutal serial killer and the policewoman assigned to track him down.This month's best-seller is a book about London's unsolved serial murders.(humorous) Serial monogamy is the tendency to have a series of sexual relationships one after another, but never more than one at a time.Me, I'm into serial monogamy.A serial number is a number that is printed on one of a large number of the same items, each of which has a different number, in order to be able to recognize which is which.