You wonder why some words fall out of favor. Came across one yesterday that is overdue for a revival: "Ignaries."
It means "ill-informed persons." Viz: "The ignaries on television called the governor a man of integrity." A tip of the fin to Robert Baillie for bringing this word to my attention, and generally bringing the Glaswegian, won't find it in no OED ruckus. Out there in Codland--use it three times today in a sentence.