The phrase "wiped off mat" implies a removal or cleaning action, suggesting antonyms related to preservation or adding. Some options might include "laid on mat," "placed on mat," "dusted off mat," "freshened up mat," or "embellished mat." Alternatively, antonyms could focus on the absence of activity, such as "ignored mat," "neglected mat," or "left alone mat." The context of the phrase will influence which antonyms are most appropriate. For example, if the mat is dirty or wet, it might be replaced with a clean or dry one rather than embellished or left alone.