That Gentleman' is a term used to refer to a man who is well-mannered and polite. It is often used as a way to show respect for someone who has demonstrated good behavior or conduct. The term can also be used to describe someone who is well-dressed and well-spoken. In general, the term is used to show appreciation for someone who exhibits good manners and etiquette. The crossword solution for the term 'That Gentleman' is HIM, which is a common pronoun used to refer to a man.