7 letters · 11 points in Scrabble
verb make steady progress; be at the high point in one's career or reach a high point in historical significance or importance
originFrom Old French prosperer, from Latin prosperō (“to render happy”), from prosperus (“prosperous”), from Proto-Italic *prosparos, from Proto-Indo-European *speh₁- (“to succeed”), whence also Latin spēs (“hope, expectation”).
Etymology from Wiktionary, CC BY-SA 3.0