Wiktionary
unachieved
a. Not yet achieved
Usage examples of "unachieved".
Then, with a sudden revulsion of spirit for which he was noted, Blotto bounded to his feet and performed hitherto unachieved altitudes in the line of wagging.
He now read the sentence before the last: Re imperfecta mortuus sum, and translated the whole as: I died with my purpose unachieved.