young-old
n.— «Another meaningful division of the life cycle is now appearing in the rise of the young-old, a group drawn mainly from the 55-to-75 age group. The young-old are distinguished from the middle-aged primarily by retirement, and distinguished from the old-old by continued vigor and active social involvement.» —“The Rise of the Young-Old” by Bernice L. Neugarten New York Times Jan. 18, 1975. (source: Double-Tongued Dictionary)
Further reading
Is there such a thing as a “neutral” accent, and if so what does it sound like? And that quirk in the way southern Californians talk about freeways. They’ll say things like take the 405 and get on the 8. Why the definite article...
Floordrobe is the new word for an old habit: piling your clothes on the floor instead of putting them away. The Oxford English Dictionary recently added an entry for it, defining floordrobe as “an untidy heap of discarded clothing left on the floor...