Cunning : having or showing skill in achieving one's ends by deceit or evasion.Frank : open, honest, and direct in speech or writing, especially when dealing with unpalatable matters.Courteous : polite, respectful, or considerate in manner.Clever : quick to understand, learn, and devise or apply ideas; intelligent.Ingenuous : (of a person or action) innocent and unsuspecting.Synonym of Ingenuous is Frank