"Pro viso" is a Latin phrase that means "for the sake of appearances" or "to create a good impression." Antonyms for this phrase may include "genuine," "authentic," "unaffected," and "sincere." These words reflect a demeanor or behavior that is honest, straightforward, and not focused on impressing others. Other antonyms of "pro viso" could be "unpretentious," "natural," "starightforward," "honest," "transparent," and "direct." Using these antonyms, one can describe behavior that is humble and unassuming, rather than focused on showmanship or putting on a facade. These antonyms could help describe a person or situation that is authentic and true to itself, rather than putting on a show for others.