"What the actual fuck" is a popular phrase used to express shock, confusion, or disbelief. While it may be entertaining to use, it is also important to recognize alternate synonyms that could be less offensive or more professional. Some synonyms that could be used instead of "what the actual fuck" include "what on earth", "what in the world", "what the heck", "what the devil", or "what the hell". These phrases still convey surprise or confusion, but are less vulgar than using profanity. It is important to choose language that is appropriate for the audience and situation, and using less offensive language is always a good practice.