Puddingheaded, an informal way of describing someone as stupid, can be contrasted with words that denote intelligence, such as astute, clever, alert, or sharp-witted. Antonyms can also describe the opposite of the specific trait that puddingheaded denotes, including discerning, perceptive, rational, and clear-thinking. It could also be argued that terms such as credible and coherent serve as strong antonyms for puddingheaded, as they relate to sound reasoning and logical thinking. When seeking to describe someone who is the complete opposite of puddingheaded, it is best to employ synonyms that point towards intelligence, wisdom, and good judgment, and steer clear of words that might unintentionally reinforce negative stereotypes about intellectual ability.