The word "most fair-spoken" refers to someone who speaks in a gracious and just manner. Its antonyms can be rude, impolite, harsh, or blunt. Hence, a person who speaks indecently or unpleasantly, can be called "least fair-spoken." Another adequate antonym may be "unjust" or "biased," meaning, someone who shows partiality and favors individual viewpoints over others. Moreover, an individual who speaks discourteously or unkindly can be described as "uncivil" or "disrespectful." These antonyms can be used in various settings, such as personal, professional, or social. It is essential to choose the right words while expressing ourselves so that we do not come off as impolite or discourteous.