The antonyms for the word "more fuddy duddy" are lively, modern, chic, trendy, fashionable, up-to-date, stylish, hip, and edgy. These words portray the opposite of the old-fashioned, conservative, and dull connotations of "fuddy duddy." Lively and modern suggest a vibrancy and freshness that are absent in someone who is fuddy duddy. Being chic and trendy implies someone who is fashion-forward and on-trend. Stylish, hip, and edgy describe someone who is fashionable and cool. In a world that values constant change, it is essential to keep up with the times and integrate new ideas into one's mindset, wardrobe, and lifestyle.