👉 In a polite manner, "insincerity" can be defined as the act of being untruthful or dishonest. It is often associated with deception and manipulation in interpersonal relationships. For example: - In a business setting, an employee might say that they are working hard on a project, when they have actually been spending hours writing code. - A politician might make false promises to improve public relations, but later reveal that their own campaign was nothing more than a publicity stunt.