From Longman Dictionary of Contemporary Englishpranksterprank‧ster /ˈpræŋkstə $ -ər/ noun [countable] JOKEsomeone who plays tricks on people to make them look silly
Examples from the Corpus
prankster• A prankster, shall we say?• Whiston fire station officer Phil Brammeier blasted pranksters who fired a rocket firework through a letterbox in Scott Avenue.• A final provocative statement from a life-long prankster, a prodigal son of Harvard, it seems so fitting.• Is it an emergency, or just a midnight prankster?• Our resident pranksters John Hind and Stephen Mosco offered a variety of campaign services to find out.• He is fond of Machiavelli the rake, the prankster and the scoundrel. 