1
: a distinctive doctrine, cause, or theory
2
: an oppressive and especially discriminatory attitude or belief
… we all have got to come to grips with our isms.Joycelyn Elders

-ism

2 of 2

noun suffix

1
a
: act : practice : process
criticism
plagiarism
b
: manner of action or behavior characteristic of a (specified) person or thing
animalism
c
: prejudice or discrimination on the basis of a (specified) attribute
racism
sexism
2
a
: state : condition : property
barbarianism
b
: abnormal state or condition resulting from excess of a (specified) thing
alcoholism
or marked by resemblance to (such) a person or thing
giantism
3
a
: doctrine : theory : religion
Buddhism
b
: adherence to a system or a class of principles
stoicism
4
: characteristic or peculiar feature or trait
colloquialism

Examples of ism in a Sentence

Noun Cubism, Impressionism, and other artistic isms. ageism, racism, sexism, and all the other familiar isms
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
What annoyed me the most, though, was the way the meditation teachers talked, which tended toward New Age–isms in passive voice. Olga Khazan, The Atlantic, 4 Sep. 2026 There are so many aspects — of colonialism, imperialism, capitalism, all the isms, and fascism, which is coming back — that avoiding politics would be anti-historical. Scott Roxborough, HollywoodReporter, 2 Sep. 2026 His Reynolds-isms really only work when playing against Branagh, however. ABC News, 2 Sep. 2026 The curator Lyle Rexer, who has written on the genre’s vexations, points out that most art-world isms—Cubism, Impressionism—were created by artists to describe their working principles. Laura Preston, New Yorker, 30 Aug. 2026 See All Example Sentences for ism

Word History

Etymology

Noun

-ism

Noun suffix

Middle English -isme, from Middle French & Latin; Middle French, partly from Latin -isma (from Greek) & partly from Latin -ismus, from Greek -ismos; Greek -isma & -ismos, from verbs in -izein -ize

First Known Use

Noun

1680, in the meaning defined at sense 1

Time Traveler
The first known use of ism was in 1680

Browse Nearby Words

Cite this Entry

“Ism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ism. Accessed 13 Sep. 2026.

Kids Definition

1
: a distinctive belief, cause, or theory
2
: an oppressive and especially discriminatory attitude or belief

-ism

2 of 2 noun suffix
ˌiz-əm
1
a
: act : practice : process
criticism
plagiarism
b
: manner of action or behavior
heroism
2
a
: state : condition : property
skepticism
b
: abnormal state or condition
alcoholism
3
: doctrine : theory : cult
Buddhism
socialism
4
: characteristic or peculiar feature
colloquialism
Etymology

Noun suffix

derived from Greek -isma and Greek -ismos (noun suffixes)

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster