n. An adult who is, and appears likely to remain, emotionally or intellectually immature.
2016
But perhaps the most rage-inducing thing about the Collective is — it’ll probably work. Yes, it’s replacing independent living with an ongoing studenthood, a sort of perma-lescence.
2013
I'm sure someone already has, but if not can I [go] down as the inventor of the word "permalescent"?
2007
Are you a functional, competent adult, who is sick of all the permalescents around you, continually failing to step up and actually take their place even on the starting lines of the maturity race?
2005 (earliest)
The first generation is the middle-aged 'Jagger' generation who have been dramatically — and in many cases, unexpectedly — enriched over the past few years. They have most to lose from a change in the status quo and, as such, will try to keep the party going for as long as possible. The second generation, coming just behind the Jaggers, are the ‘Bono Boomers’, Ireland’s first 'permalescent' (permanently adolescent) generation.