Unfortunately, this very particular pair of meanings is always going to be sabotaged by hyperbole. Not the words, but the actual meanings.

Whatever word we have for "this is [truthfully] [adjective]", they're always going to use the word for "truthful" to give something added punch. Specifically in the sense of suggesting a quality has become so extreme that the metaphor is no longer an exaggeration.

Part of it is we humans just love metaphors come to life. Godzilla "literally" was taller than a skyscraper. Superman "literally" was stronger than a freight train. Tolkien was disappointed enough as a kid in Dunsinane forest "coming to life and walking" (by a bunch of men chopping off branches for camouflage, in MacBeth), that he wanted to do a story where the trees literally walked, without any metaphorical fine print.