The antonyms for the word "most riveted" include "bored," "uninterested," "detached," "unperturbed," and "unaffected." Unlike the captivating nature of something that is "most riveted," these antonyms imply disinterest or a lack of emotional investment. Whether it's a conversation, a movie, or a book, the opposite of being "most riveted" is feeling disconnected or indifferent. Interestingly, these antonyms can vary in intensity, with "bored" being a mild form of disinterest and "unaffected" conveying a more severe form of detachment. Regardless of the antonym used, it is clear that being "most riveted" is the polar opposite of being uninterested.