The antonyms for the word "most undisguised" could be "masked," "veiled," or "disguised." When something is undisguised, it means it is open, obvious, and straightforward. Its antonyms suggest the opposite, meaning that they are not obvious, but instead hidden or concealed. For example, if someone is acting in a disguised manner, they may be pretending, concealing their true intentions or feelings. In contrast, if someone is acting in an undisguised manner, they are being completely genuine and truthful. Therefore, knowing the antonyms of "most undisguised" enables us to differentiate between a straightforward expression of ideas and something that is hidden beneath a facade.