Macrocephalous is an uncommon word that refers to an abnormally large head or skull shape. It is a medical term used to describe individuals with macrocephaly or megalocephaly conditions. However, there are several synonyms that can also be used to describe the same condition. Some of the synonyms for macrocephalous include megacephalic, big-headed, large-skulled, and craniofacial hypertrophy. These synonyms help to convey the same meaning or message as macrocephalous if you want to avoid using a complex or unfamiliar term. Knowing these synonyms can help you choose the right word to accurately describe an individual with an abnormally large head.