Idealistic and Imaginary:
* "The novel presented a utopian society where everyone was equal and lived in harmony with nature."
* "Her plans for world peace were considered utopian by many, but she remained determined to make them a reality."
Unrealistic and Impossible:
* "The politician's promises of a utopian future were met with skepticism, as they seemed too good to be true."
* "His utopian ideas about reforming the education system were dismissed as impractical and naive."
Describing a specific place or situation:
* "The commune tried to create a utopian community based on shared resources and collective decision-making."
* "The idyllic island felt like a utopian paradise, far removed from the stresses of modern life."
Using "utopian" figuratively:
* "The artist's painting depicted a utopian world, full of vibrant colors and optimistic imagery."
* "Their relationship was utopian for a brief time, before reality set in and the cracks began to show."