The phrase "rid roughshod" refers to a person who acts recklessly or without concern for others. Its antonyms are "respectful," "considerate," and "thoughtful." Respectful means having or showing deference and admiration towards others, while considerate means showing kindness and concern for others. Thoughtful, on the other hand, refers to a person who takes the time to consider the feelings and needs of others. Using these antonyms, we can describe a person who is considerate, respectful, and thoughtful, which are all positive traits that people should strive for in their interactions with others.