Egghead is a derogatory term that often refers to someone who is considered overly intellectual or bookish. There are numerous synonyms that can be used to describe this type of person. Some of these include brainiac, nerd, geek, dork, eggspert, intellect, smarty-pants, know-it-all, eggwhite, scholar, and intellectual. Each of these words highlights the person's intelligence or knowledge in a particular field or area. While some people might use these words in a negative way, others might use them as terms of endearment or admiration. Regardless of the connotations, each of these words can be used to describe someone who is intellectually curious and knowledgeable in a particular area.