Wiktionary
originless
a. Without an origin.
Usage examples of "originless".
The fields of the city gave way to a plain where huge stones rose originless as wizards around him.
Thousands of years old, unweathered, originless, the door yielded no answer to his waiting.
His voice sounded exactly the way it had when he was alive: international, originless, New Orleans-born and world-traveled.
They are old, older than the first weave of history and riddlery, originless, unnamed.