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The Collaborative International Dictionary of English v.0.48 (gcide)

Prosperous \Pros"per*ous\, a. [L. prosperus or prosper,
originally, answering to hope; pro according to the root of
sperare to hope. See {Despair}.]
1. Tending to prosperity; favoring; favorable; helpful.
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A happy passage and a prosperous wind. --Denham.
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2. Being prospered; advancing in the pursuit of anything
desirable; making gain, or increase; thriving; successful;
as, a prosperous voyage; a prosperous undertaking; a
prosperous man or nation.
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By moderation either state to bear
Prosperous or adverse. --Milton.
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Syn: Fortunate; successful; flourishing; thriving; favorable;
auspicious; lucky. See {Fortunate}.
[1913 Webster] -- {Pros"per*ous*ly}, adv. --
{Pros"per*ous*ness}, n.
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