Beefheads, a word used to describe someone who is perceived as stupid or unintelligent, has a few antonyms that can be used to describe the opposite qualities of an individual. Intelligent, clever, and astute are antonyms for beefheads, as they refer to someone who is quick-witted, proficient in their field, and sharp-minded. Additionally, words such as knowledgeable, erudite, and accomplished also work as antonyms, reflecting that the person in question is well-educated, experienced, and accomplished in their profession. These antonyms emphasize the positive qualities that may be lacking in someone labeled as a beefhead, highlighting the importance of valuing different skillsets and intelligence levels.