The word "un politest" refers to someone who is impolite or lacking in manners. Some antonyms for this word include courteous, polite, refined, well-mannered, respectful, gracious, kind, considerate, chivalrous, and polite. These words all indicate a sense of kindness and respect towards others, which is the opposite of being impolite. Someone who is courteous and well-mannered shows consideration for others, while someone who is impolite may be seen as rude and insensitive. In social situations, it is important to display good manners and polite behavior, which can also improve relationships and communication.