oldster

plural oldsters

1. informalsometimes disrespectfulSomeone who is old.

   He was quoted as saying alcohol was better than milk in the diet of "oldsters."

   1959, The Farm Quarterly, Volume 14, volume 14, Land Media Incorporated, page 20

   2 more examples

   'Oh yes,' laughed Solitaire. 'Plenty of them. All the local inhabitants who take the money off the oldsters, for instance. The people who own the motels and the trailer-camps. You could make plenty of money running the bingo tournaments.'

   1954, Ian Fleming, “The Everglades”, in Live and Let Die, London: Pan Books, published 1957, page 121

   The oldsters start squabbling about whose memory is better. “It was cold that day,” one says about some faraway memory. “What are you talking about? It was May, late May,” says another.

   2020 February 10, David Brooks, “The Nuclear Family Was a Mistake”, in The Atlantic

   Synonyms: geezer, old timer, senior citizen, ager, antique, badge-cove, cheeser, coffin dodger · Antonyms: youngster

2. nauticalA midshipman of four years' standing; a master's mate.