Definition: The word "adulterer" in the English language appears 12 times in the New Testament (Matthew 9:8; John 4:16-17; Acts 2:36). This term was used by Jesus to describe those who had been engaged in unrighteous acts. Here are some of the meanings and uses of "adulterer": 1. A person who has become involved in activities or behaviors that violate ethical standards, such as lying or stealing. 2. Someone who intentionally and deliberately misrepresents another's status or reputation to deceive others, which is a serious offense under the law of Jesus (Matthew 9:8). 3. An adulterer is also a person who has become involved in activities that are generally considered wrong, often because they were coerced or forced into them. 4. A man or woman who deliberately and recklessly violates rules of conduct, particularly those concerning marriage and family, as exemplified by the case of adultery (Matthew 9:8). The word "adulterer" has a close relationship to the Old Testament, where it was used in a figurative sense to describe those who had been involved in unlawful acts. It is often translated as "unrighteous man" or "unrighteous woman," both indicating that these individuals have committed serious wrongs.