meliorism (noun)

1. By incorporating environmentally friendly materials and designs, the architect embraced meliorism in their vision of creating sustainable buildings for the future.

2. The preacher's sermon was grounded in meliorism, as he encouraged his congregation to have faith that their efforts would improve the world and bring about positive change.

3. In the futuristic world of the novel, advanced technologies and the belief in meliorism enabled humans to create a utopian society with unparalleled progress.

4. The fashion designer's collection reflected the concept of meliorism, with their emphasis on creating ethically made clothing and supporting fair trade practices.