IPA: //prəˈspɛrəsnəs//
KK: /prɑːˈspɜːrəsnəs/
The state of being successful or wealthy, often in terms of financial well-being.
The prosperousness of the community was evident in its well-maintained parks and thriving businesses.
Prosperousness is formed from "prosperus" (from Latin, meaning fortunate or successful) and the suffix "-ness" (meaning the state or quality of). The word refers to the state of being prosperous or successful.
Think of 'prosperous' as being 'fortunate' and the '-ness' indicating a state, so prosperousness means the state of being fortunate or successful.