Boy Fridays is a term that is commonly used to refer to male personal assistants who are known for their efficiency and ability to handle various tasks. If you are looking for synonyms that accurately describe a Boy Friday, you can use words such as helper, personal aide, right-hand man, confidant, or assistant. Other great synonyms for Boy Fridays include supporter, assistant manager, secretary, or right-hand assistant. These words are quite useful when describing an assistant who is always ready to help and support their boss in various ways. Ultimately, the choice of words depends on the context of your conversation or writing.