If you're talking about retard, what would you prefer i use and how long until that word becomes a slur? You know it wasn't long ago retard was the polite term, and mongoloid before that. It doesn't matter what word you use, if the meaning has negative connotations, some asshole like you decides to take their turn at policing speech to the benifit of nobody.
In any case, I think you're you're wasting your time.
Why would I do that.