young-old n. older adults who lead active lives contrary to stereotypes of diminished abilities. (source: Double-Tongued Dictionary)
Further reading
The Very Hungry Caterpillar (Bookshop|Amazon) had an earlier title: A Week with Willie the Worm. This is part of a complete episode. Transcript of “The Very Hungry Caterpillar’s First Title” Here’s another book title that...
Martha from Tallahassee, Florida, remembers hearing older relatives announce they were going for their constitutional, a term that traces back to Latin constitutio, meaning “character,” “disposition,” “nature,” or “the essence of a thing.” Its...