PopSugar: These Cat Taco Costumes Are Worth the Risk of Making Your Cat Extra Grumpy
These Cat Taco Costumes Are Worth the Risk of Making Your Cat Extra Grumpy
E!: These Taco Bell Sauce Packet Costumes Will Heat Up Your Halloween
Taco Bell has figured out exactly what you need to be this Halloween by unveiling a line of costumes inspired by the chain’s popular items. While the idea of dressing up as a Taco Bell sauce packet ...
The Beaumont Enterprise: Photos: 5 epic pet costumes for Halloween. Taco, cactus, princess and more
Photos: 5 epic pet costumes for Halloween. Taco, cactus, princess and more
"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.