Use prosperity to refer to the state of being successful. In the US, the decades following World War II were characterized by rising prosperity, with large numbers moving into the middle class.

Prosperity usually means the type of success that comes from having a lot of money. Our modern English word derives from Middle English prosperite, borrowed through Old French from Latin prosperus "favorable." The Latin word also means "fortunate," and the word prosperity does have an element of good luck.

Definitions of prosperity

n the condition of prospering; having good fortune

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eudaemonia, eudaimonia, upbeat, welfare, well-being, wellbeing
a contented state of being happy and healthy and prosperous
the condition of financial success
a state of prosperity or fame
fool's paradise
an illusory state of wellbeing
health, wellness
a healthy state of wellbeing free from disease
big time
the highest level of an occupation (especially in entertainment)
pay dirt
a profitable success
Type of:
good fortune, good luck, luckiness
an auspicious state resulting from favorable outcomes

n an economic state of growth with rising profits and full employment

a state of economic prosperity
Type of:
economic condition
the condition of the economy

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