This is 10-years old, but I found it interesting. It's from a BBC website that features an Internet talk show about disability. They polled users on a list of "words that could be considered very deliberately offensive, as well as everyday words that grate just as badly."
Worst Words Vote. They combined words for both physical & cognitive/psychiatric disabilities, so it;s a bit apple-and-orange-y. However, the fact that the list was voted on, rather than put together by a committee trying to be politically correct, makes the list more reflective of what's actually being used.
I had never heard of #3, and #4 is not used in the US. If someone is being deliberately offensive, #1 "spastic" would probably be "spazz." "Retard" would be more common than "retarded."
#9 "Wheelchair-bound" resonates with me. Mr. Nutrax uses a wheelchair. I always word it like that. "Uses a chair" as one might use another medical appliance such as a cane or a hearing aid. "Wheelchair-bound" to me connotes the attitude of people who seem to think Mr. N, is also deaf, dumb, and blind, and address everything to me."So, how is he feeling these days?" "Would he like some coffee?"
Anyway--I'm curious. Are these terms common or uncommon in other places? Are there similarly offensive words in other languages?
