ism (noun)

1. In Greek mythology, the belief in the Olympian gods was considered the authoritative ism of that time.

2. The fashion ism of the 1920s was characterized by flapper dresses and bobbed hairstyles.

3. Cubism was an influential art ism developed by Pablo Picasso and Georges Braque in the early 20th century.

4. The belief in reincarnation is a key aspect of the Hindu religious ism.