Softhead is often used to describe someone who lacks intelligence or decision-making skills. However, there are several antonyms for this term. A person who is intelligent, shrewd, or astute could be considered the opposite of a softhead. These individuals possess the ability to think critically, analyze situations, and make informed decisions. A person who is knowledgeable or experienced may also be considered an antonym for softhead. These individuals have a wealth of understanding and know-how in certain areas or industries, and they are often sought after for their wisdom and expertise. In summary, the opposite of a softhead is someone who is intelligent, astute, knowledgeable, or experienced.