"Adult children" comes from "adult children of alcoholics", but now has broader reference to adults who were abused emotionally, physically or sexually in childhood.
Merriam-Webster has an entry for half-orphan, meaning someone with only one living parent. They say specifically a child, which would match the usual usage of "orphan" (as mentioned in the question), but it might be used of an adult sometimes, either jocularly or by extension. This doesn't distinguish which parent is dead, but could be combined with a further explanation if it matters.
4 Based on usage, hyphenation doesn't seem necessary. According to Google, "a child and adult psychologist" seems to be the most idiomatic expression referring to a psychologist specializing in both "child psychology" and "adult psychology". Your own suggestion and other suggestions in previous answers are simply not as idiomatic among ...
16 The word adult appear to have derived from the Latin term adultus, meaning grown up, mature, adult, ripe. Adulterate (and its cognate adultery) is reported to derive from the Latin adulterare - to falsify, corrupt. Are the meanings and derivation of adult and adulterate, directly related, or is this just a coincidence of spelling?
"adult children" is sometimes used in contexts where age is important, such as a form requiring someone to list all children under 18 and all adult children living with them. And someone might use it to emphasise that their children have left home or aren't dependent on them. But you wouldn't introduce someone as "my adult child/ren".
If an adult gets kidnapped, would it still be considered "kid"napping? [duplicate] Ask Question Asked 11 years, 11 months ago Modified 11 years, 11 months ago
expressions - If an adult gets kidnapped, would it still be considered ...
Etymonline comments: Specific sense of "adult male of the human race" (distinguished from a woman or boy) is by late Old English (c. 1000); implying that "man" was used in a purely non-gendered way before then.
There is a specific term, and it keeps evading me, that refers to an adult who still embraces child-like wonder, curiosity, etc.... Not inferring a child-like or infantile adult, i.e. someone with a
terminology - synonym for child-like [adult] - English Language & Usage ...
The best way to do it, I think, would be to forgo the hyphens completely and go with: I am a psychologist who works with children and adults. Anything else is awkward, ambiguous, or both. If it's necessary to emphasize that this individual works with children and adults (i.e., this isn't just introductory information), you could add in a 'both': I am a psychologist who works with both children ...
What term can be used for an adult, especially a man, who is in his forties and still behaves like a teenager, shunning responsibilities typical of mature people, preferring to enjoy himself?