I have recently watched a Vsauce video titled 'Juvenoia'. In video he says that Juvenoia is fear of an older generation that the generation after them is worse and less wise than them. After trying to translate that word in various languages, I failed. So, is Juvenoia a real word?
It is a portmanteau, i.e. a blend, of juvenile and paranoia. That said, it isn't a very elegant blend.
It is an uncountable noun.