adultescence
n.— «Marriage once was the gateway to adulthood. It is now the last stop in what has come to be called “adultescence.”» —“Marriage stall puts children in free fall” by Susan Reimer Orlando Sentinel (Florida) July 6, 2004. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...
Chad in Hilliard, Florida, wonders about the expression old as Methuselah, meaning “extremely advanced in years.” The phrase references Methuselah, a figure in Jewish, Islamic, and Christian tradition said to be 969 years old when he...