Most celebrious means something that is widely celebrated or famous. Its antonyms, on the other hand, refer to things that are not celebrated or widely known. Such antonyms can include words like unknown, insignificant, unpopular, unremarkable, and unnoticed. For instance, a small town might be unknown, unpopular or insignificant in comparison to a big city like New York, which is widely celebrated and known all over the world. The word "most celebrious" may also be contradicted by words like infamous, notorious, obscure or anonymous which all connote something less savoury. Well-known antonyms to "most celebrious" are dull and ordinary, meaning things that are not eye-catching or extraordinary.