The synonym for the word ‘Luminary’ is Celebrity. A luminary is an individual who serves as a guide or inspiration to others, usually an individual who is notable or famous in their chosen area of endeavor. A celebrity, on the other hand, is an individual who is famous or known. In modern usage, a luminary refers to a person who has attained eminence in a specific field or is an inspiration to others. Synonyms include notable, leading light, and famous person.