There are many synonyms for the term "inside man-woman", which can refer to someone who has access to special information or knowledge. Some possible alternatives include insider, expert, authority, specialist, professional, skilled individual, knowledgeable person, and trained insider. These terms are often used to describe individuals who have a deep understanding of a specific field or area of expertise, and who can provide valuable insights to others. Whether you are looking for someone who can provide expert advice, insights, or guidance, there are many different synonyms for the inside man-woman that you can use to find the right person for your needs.