ism
//ˈɪzəm//
Noun
ismSingular
ismsPlural
1
A distinctive doctrine, theory, system, or practice, especially one relating to philosophy, politics, or religion.
The professor explained various political isms such as socialism and capitalism.
2
A suffix used to form nouns indicating a belief, ideology, movement, or characteristic.
Words like capitalism and socialism end with the suffix -ism.