The word "Blindstory" is quite unique and there aren't many precise synonyms to describe it entirely. However, some terms that could be used, that imply a similar meaning might be "unseen history", "hidden narratives" or "untold stories." Each of these phrases hints at a narrative that has been previously concealed or undervalued. Additionally, related terms such as "mystery," "enigma," and "riddle" could be applicable when referring to elements of a Blindstory. It's essential to note that Blindstories are often overlooked or disregarded, and utilizing these alternative terms can assist in highlighting their importance and value to historiography.