Antonyms for the phrase "more unrevealed" would describe something that is open or disclosed. Some possibilities include: revealed, divulged, disclosed, exposed, uncovered, or obvious. These antonyms suggest a level of clarity or transparency that is the opposite of the uncertainty implied by the original phrase. Rather than being hidden, these things are out in the open and accessible to anyone who cares to look. Whether we are talking about information, emotions, or physical objects, the antonyms for "more unrevealed" suggest a sense of openness and honesty that is often seen as desirable in personal relationships and professional contexts alike.