illustrious

Merriam-Webster's Word of the Day for August 30, 2026 is: illustrious • \ih-LUSS-tree-us\  • adjective Illustrious describes a person or deed that is highly admired and respected. // During the ceremony, the illustrious star of stage and screen was presented with a lifetime achievement award. See the entry > Examples: “Two of the most respected professors—an academic power couple—invited me to their home for dinner. I was flattered and excited. When we sat down at the table, my heart sank. The first dish they served was steak tartare. Raw beef, no matter how well seasoned, no matter how swanky the cut, is not my jam. ... And in the home of these illustrious professors, I was ashamed about that. I feared they would consider me unsophisticated for not liking the dish.” — Leslie John, Revealing: The Underrated Power of Oversharing, 2026 Did you know? Today’s spotlight is on illustrious, from the Latin adjective illustris, meaning “shining brightly with light.” Illustris itself was probably a back-formation of the Latin verb illustrare, a word with varied meanings, among them “to light up,” “to make clear,” and “to embellish.” (Our word illustrate also comes from illustrare, of course; its original meaning was “to enlighten intellectually, culturally, or spiritually.”) At one time, illustrious could be used synonymously with its immediate Latin forbear to describe things that glow brightly, but that meaning is now considered archaic. The word today is almost exclusively used to describe something—such as a career or achievement—that stands out figuratively, shining brilliantly in the mind’s eye.