Antonyms for the word "most right-on" could include "outdated," "obsolete," or "unfashionable." Other words that could be considered antonyms of "right-on" may include "ignorant," "narrow-minded," or "backward." Additionally, words such as "intolerant," "bigoted," or "prejudiced" may be antonyms for "right-on" as they suggest a lack of understanding or acceptance of others. Ultimately, antonyms for "right-on" may vary depending on the context and usage of the word, but they generally refer to ideas, attitudes, or actions that are the opposite of progressive or accepting.