The word "most unnoteworthy" describes something that is not noteworthy or remarkable in any way. However, there are several antonyms for this word that can be used to describe things that are notable, remarkable, or impressive. Some of these antonyms include notable, noteworthy, remarkable, outstanding, exceptional, impressive, significant, and distinguished. These words can be used to describe people, places, events, or things that stand out from the ordinary and make an impact. Using these antonyms can help to create more interesting and engaging writing, making it more exciting for readers.