The state or condition of being unprosperous.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "unprosperousness" in a sentence
"I am extremely delighted, that your ladyship thinks so well of my dear honest parents: they are good people, and ever had minds that set them above low and sordid actions: and God and your good brother has rewarded them most amply in this world, which is more than they ever expected, after a series of unprosperousness in all they undertook."