illustrious (adj) - highly distinguished or dignified; renowned; glorious [ih-luhs-tree-uhs]
BREAKDOWN: IL- (in) + LUSTR- (light) + -OUS (full of)
lustrous means having a sheen or glow; bright; radiant
“The man who has nothing to boast of but his illustrious ancestry is like the potato—the best part under ground.” —Thomas Overbury