The word "poutiest" connotes a sulky, petulant, or moody behavior. Antonyms for this word could include more positive adjectives like cheerful, content, or joyful. These words imply a more optimistic or upbeat attitude, rather than one that is negative or brooding. Other antonyms for "poutiest" could include affectionate, friendly, kind-hearted, or pleasant. These words connote a warm, welcoming, or caring demeanor, and are often used to describe people who are easy to get along with and have a positive influence on the people around them. Whatever the opposite of "pouty" is, it's likely a trait that many people aspire to embody in their own lives.