Retard is used to describe the slowing

That word, the verb, is pronounced “ree-TARD”. The “R” word is “REE-tard”.

In the same way that “negro” (NEH-gro) in some languages means black and is perfectly fine, and the same way that Niger (american “NIE-jur” or original “nee-ZHER” is also fine.

I already made my argument and explicitely said I would not debate, but I will simply reiterate: I don’t care about words that USED to be offensive or words that MIGHT ONE DAY be offensive, the “R” word is offensive NOW.