"Ride roughshod" is an idiomatic expression that means to act without caring for others' opinions or feelings. Its antonyms, on the other hand, are phrases that represent similar but opposite concepts. One antonym could be "treat with respect," as it embodies the idea of taking others' thoughts and feelings into consideration. Other antonyms include "be considerate," "be polite," and "show deference." Each of these represents a positive way of engaging with others and demonstrating a willingness to compromise and work together. By embracing these concepts, individuals can foster better communication, respect, and cooperation in their personal and professional relationships.