Skeleton in the cupboard is commonly used to refer to a shameful or embarrassing secret that one wishes to keep hidden. When looking for antonyms for this phrase, we can consider words or phrases that describe honesty, openness, transparency, and vulnerability. These may include phrases such as "open book," "nothing to hide," "clean slate," or "heart on the sleeve." Such terms emphasize the opposite of concealed or hidden secrets, expressing an individual's comfort in being open about their past, their thoughts, and their emotions. In sum, the antonyms for "skeleton in the cupboard" describe an individual's readiness to lay everything bare and their willingness to face their fears and vulnerabilities head-on.