What is "showrunner"

n. (context television English) A person in charge of running a show, especially a reality show where there is plot coordination without a fixed script

A showrunner (or show runner) is a person responsible for overall and day-to-day operation of a television series — a position more often credited as executive producer.

A showrunner's duties often combine those traditionally assigned to the head writer, executive producer, and script editor. In some films, directors have creative control of a production — but in television, the showrunner always outranks the director. The showrunner is at the opposite end of the staff hierarchy from runners, who are the most junior members of a production team, though showrunners are sometimes (often humorously) called runners for short.