The word "skulled" refers to someone who has a prominent or large skull. Some synonyms for this word include the terms "big-headed," "wide-skulled," or "cap-headed." Additionally, terms like "cranial," "calvarial," or "cephalic" can be used to describe the anatomy or structure of a skull. Some slang terms that could be used to replace "skulled" might include "noggin," "dome," or "melon." Overall, there are many different ways to describe someone with a large or prominent skull, and which term you choose may depend on the context, audience, or tone of your writing or speech.