If "literally" means "figuratively," then we literally have no word for "literally."
It’s worth pointing out that you just used the word for “literally” and we knew which sense of the word you meant through context. Just like the verb “dust” can mean to put a layer of small particles on something but can also mean to remove the small particles from something. Humans are able to sort these things out.
However, one of the best things about language is that if a need actually arises for more clarity about “literalness”, a solution will naturally emerge to address it.
Even the word “literal” started out as a word that pertained specifically to the written word, and scholarly things, and its sense evolved to refer to things not necessarily written down, to the present meaning of “the most straightforward interpretation of what I’m saying”. A need arose and a word filled the need.