Insolent : showing a rude and arrogant lack of respect.Agreeable : quite enjoyable and pleasurable; pleasant.Coward : a person who is contemptibly lacking in the courage to do or endure dangerous or unpleasant things.Polite : having or showing behaviour that is respectful and considerate of other people.Considerate : careful not to inconvenience or harm others.Antonym of Insolent is Polite