Add Yahoo as a preferred source to see more of our stories on Google. Learn why the R-word, R-worded, or any form of the phrase "mental retardation" is no longer an acceptable way to describe ...

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The R-word is making a comeback. Credit: Mashable illustration / Stacey Zhu Once pushed to the margins of acceptable language thanks to campaigns like "Spread the Word to End the Word," the R-word all ...