The phrase "am disclosed" implies that something has been made known or revealed. To express the opposite meaning, one might use antonyms such as "is hidden," "remains undisclosed," or "is kept secret." These phrases may suggest that information or an object is not yet known or accessible, or that it is intentionally being kept from view. Other antonyms for "am disclosed" might include "is obscured," "is unexposed," or "is concealed," suggesting the idea of something being shrouded or covered up. Regardless of the specific phrasing, antonyms for "am disclosed" typically convey a sense of mystery, secrecy, or ambiguity.