Beefhead is a derogatory term used to describe someone perceived as thick-skulled or dim-witted. However, using offensive language is never an appropriate way to communicate and instead, it's better to use more inclusive language. Some synonyms for beefhead could include "blockhead," "dolt," "numbskull," "simpleton," or "knucklehead." It's important to remember that even if someone's intelligence may not be at the same level as yours, it doesn't give anyone the right to demean or mock them. Inclusive language can help build a better understanding and communication between people.