Man letters are essentially letters that are written by a man. However, there are several other terms that can be used to describe such letters depending on the context. For example, one could refer to them as masculine letters or letters from a male perspective. In a broader sense, man letters could also be categorized as personal letters or informal correspondence. Other synonyms for man letters include missives, epistles, communiques, notes, or memos which signify a written message that is communicated between individuals. The use of these synonyms for man letters depends on the context and the nature of the communication.