sustainer
n.— «Ms. Clark, 56, is a “sustainer,” in league parlance, meaning she has moved to an advisory position. “I’m an old doll. They need us,” she says of the league’s “active” members, the roughly 28-to-35-year-old core of the club, the young women who put the junior in the league.» —“Old dolls and Junior Leaguers” by Leanne Delap Globe and Mail (Toronto, Can.) May 8, 2004. (source: Double-Tongued Dictionary)
Further reading
Understanding the varieties of conversational styles can mean the difference between feeling you’re understood and being insulted. “High-involvement” speakers interrupt or talk along with someone else to signal their enthusiasm...