I think _Mongoloid_ doesn't fit with the rest of your examples, as it was never originally an impartial term. There's never a time when _Mongoloid_ wasn't an of

I think _Mongoloid_ doesn't fit with the rest of your examples, as it was never originally an impartial term. There's never a time when _Mongoloid_ wasn't an offensive term to some group, whereas _retard_ & _special_ were originally impartial.