Simplism is the belief that everything should be simplified, and there are many synonyms that can be used to describe this philosophy. One such synonym is minimalism, which is the belief that less is more and that simplicity is the key to a happy life. Another synonym for simplism is reductionism, which is the belief that complex phenomena can be reduced to simpler or more fundamental ones. A third synonym for simplism is primitivism, which is the belief that a simpler, more natural way of living is preferable to modern civilization. Overall, simplism is a philosophy that values simplicity and minimalism, and there are many different synonyms that can be used to describe this belief.