"Moron" was once considered a technical term for mental disability. Then, kids starting using it, and it became offensive. It was replaced by "mental retardation". We all know how that term evolved in kind. Many people now use "disabled" (including this list's suggestions), but that is now often seen replaced by "differently abled". If I were a betting man, I'd say that in 5 years even "differently abled" will be co-…
I remember joking years ago that "disabled" would become a slur, after "retard" became less and less acceptable. I didn't think it would actually happen, but the endless treadmill is being proven again and again. I would also bet that "differently abled" is absolutely considered offensive by the end of this decade.
Another poster pointed out that “non verbal, non vocal” is actually a better burn than the one it’s replacing.