palliate

Long ago, the ancient Romans had a name for the cloak-like garb that was worn by the Greeks (distinguishing it from their own "toga"); the name was "pallium." In the 15th century, English speakers modified the Late Latin word palliatus, which derives from "pallium," to form "palliate." Our term, used initially as both an adjective and a verb, never had the literal Latin sense referring to the cloak you wear, but it took on the figurative "cloak" of protection. Specifically, the verb "palliate" meant (as it still can mean) "to lessen the intensity of a disease." Nowadays, "palliate" can be used as a synonym of "gloss" or "whitewash" when someone is attempting to disguise something bad.