The word "badmannered" refers to someone who lacks good manners and behaves rudely or impolitely. Antonyms that describe the opposite of badmannered include well-mannered, polite, courteous, refined, cultured, and civil. Someone who is well-mannered displays good etiquette and observes social norms with grace and respect for others. A polite person is always courteous and considerate towards others, while a cultured person is sophisticated and has good taste. Lastly, someone who is civil is peaceful and does not engage in rude or aggressive behavior. Adopting the opposite traits of badmannered behavior can help individuals become more socially skilled, respected, and appreciated by other people.