The antonyms for the word "most divulged" could be words like "kept secret," "guarded," "confidential," and "classified." These words indicate that information is being kept hidden or private and not shared openly. Other antonyms could include "unshared," "unexposed," "unrevealed," and "unpublished." These words denote a lack of disclosure or openness with regards to information. It's essential to use antonyms when writing to convey a more specific meaning and to ensure that readers understand the intended message. By using antonyms, writers can create a contrast between different meanings and use this to their advantage.