as has already been said, overmorrow is already mostly a thing and is completely cromulent, and i propose taking the swedish “förrgår” and bringing it in as something like “foremorrow” which sounds reasonably cromulent to my ear, might confuse people a little bit but the “fore” bit is a pretty big hint as to what it means.
Be the change you want to see in the word.
as has already been said, overmorrow is already mostly a thing and is completely cromulent, and i propose taking the swedish “förrgår” and bringing it in as something like “foremorrow” which sounds reasonably cromulent to my ear, might confuse people a little bit but the “fore” bit is a pretty big hint as to what it means.