The word "mesmeric" is used to describe something that is captivating or enchanting. Antonyms for this word would be things that are not captivating, enchanting or fascinating. Some possible antonyms for "most mesmeric" might include "boring," "ordinary," "uninteresting," "unexciting," "uninspiring," or "mundane." Other antonyms may include "dull," "tiresome," "average," or "humdrum." When compared to something that is most mesmeric, these words seem to evoke feelings of mundanity and monotony. Using antonyms can be a great way to describe the contrast between something captivating and something tedious.