Most subrosa refers to something that is done secretly or covertly. The antonyms of most subrosa would be openness, transparency, and honesty. When actions or information are open, they are not hidden or concealed from the public or parties involved. Transparency implies that everything is clear, and there is no hidden agenda, while honesty implies that the speaker or actor is truthful and sincere. Using antonyms such as transparency, openness, and honesty can help to emphasize the importance of being sincere, truthful, and transparent in all aspects of life. It encourages people to be accountable and take responsibility for their actions.