"Rod Speed" wrote in message
...
Back in the day, Moron, Imbecile and Idiot had specific IQ ranges to be
classified as such...

I sort of knew that, but I wonder what they do now.

Intellectually disabled mostly
https://en.wikipedia.org/wiki/Intellectual_disability

I've not heard that term. The usual euphemism is "learning difficulties"
which tends to refer to people who are unkindly and humorously referred to
as "the hard of thinking" as an extension of the similar derivation "the
hard of hearing".