THE SMART TRICK OF SEX HIEP DAM THAT NO ONE IS DISCUSSING

And someone could use it to emphasise that their small children have still left home or aren't depending on them. But You would not introduce another person as "my adult youngster/ren".The word continues to be "youngsters" despite their age. It is possible to elaborate on that with "grown-up young children" or, much more awkwardly, "adult young chi