prosperous

adjective

pros·​per·​ous ˈprä-sp(ə-)rəs 

1

: auspicious, favorable

2

a

: marked by success or economic well-being

b

: enjoying vigorous and healthy growth : flourishing

prosperously adverb

prosperousness noun

Synonyms of prosperous

• thriving
• prospering
• successful
• wealthy
• golden
• booming

Examples of prosperous in a Sentence

The company had a prosperous year.

He predicted a prosperous future.

Recent Examples on the Web

Different cities succeed by different measures, but a robust infrastructure, a strong sense of identity, a vibrant cultural scene and a prosperous economy are necessary for any successful modern metropolis. —Mina Al-Oraibi, Time, 14 Apr. 2026

Conference rooms were identified by the names of other, more prosperous cities—London, Brussels. —Rebecca Mead, New Yorker, 13 Apr. 2026

The family earning $175,000 — a household income that would have felt unambiguously prosperous in any prior decade — now spends its evenings absorbing content from people who vacation in the Maldives, renovate kitchens that cost more than a median home, and treat business class as a hardship. —Nick Lichtenberg, Fortune, 12 Apr. 2026

So how did a prosperous midwestern Republican proceed from wanting lower taxes to justifying a coup attempt? —Jonathan Chait, The Atlantic, 10 Apr. 2026

Word History

Etymology

Middle English, from Latin prosperus "agreeable to one's wishes, successful, (of omens) propitious" (going back to *pro-sparo-, from pro- pro- entry 2 + *sparo-, going back to Indo-European *sph₁-ró- "thriving") + -ous -ous — more at speed entry 1

Note: An apparently traditional explanation is recorded by the fourth/fifth century grammarian Nonius Marcellus, namely, that prosperus was in origin from the phrase prō spērē "in conformity with one's hope" (spērē being taken as a variant of spē, ablative of spēs "hope"), though this may best be regarded as a folk etymology. It fails to account for the short e in prosperus.

First Known Use

15th century, in the meaning defined at sense 1

Kids Definition

prosperous

adjective

pros·​per·​ous ˈpräs-p(ə-)rəs 

1

: having or showing success or financial good fortune

2

: strong and healthy in growth

prosperously adverb