Synonyms for Prosperous (same or very similar meaning)
WordNet sense 1 (very lively and profitable):
booming, palmy, roaring, thriving, flourishing, prospering
WordNet sense 2 (having succeeded or being marked by a favorable outcome):
successful
WordNet sense 3 (in fortunate circumstances financially; moderately rich):
comfortable, easy, well-fixed, well-heeled, well-off, well-to-do, well-situated
WordNet sense 4 (possessing material wealth):
rich
WordNet sense 5 (marked by peace and prosperity):
golden, halcyon
WordNet sense 6 (enjoying or showing or marked by joy or pleasure or good fortune):
happy
WordNet sense 7 (favoring or bringing good luck):
favorable, lucky, favourable
WordNet sense 8 (presenting favorable circumstances; likely to result in or show signs or success):
propitious
From the ODE community, based on WordNet
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