ideology

noun

ide·​ol·​o·​gy ˌī-dē-ˈä-lə-jē  ˌi-dē-ˈä- 

variants or less commonly idealogy

ˌī-dē-ˈä-lə-jē  ˌī-dē-ˈa-  ˌi-dē-ˈä-  ˌi-dē-ˈa- 

plural ideologies

1

a

: a manner or the content of thinking characteristic of an individual, group, or culture

progressive/liberal/conservative ideology

b

: the integrated assertions, theories and aims that constitute a sociopolitical program

said that the election was not about ideology

c

: a systematic body of concepts especially about human life or culture

2

: visionary theorizing

ideologist

ˌī-dē-ˈä-lə-jist 

ˌi-

noun

Did you know?

Ideology has been in use in English since the end of the 18th century and is one of the few words whose coiner we can identify. The French writer A. L. C. Destutt de Tracy proposed it as a term to designate the “science of ideas,” and in that sense the word was quickly borrowed into English. Though ideology originated as a serious philosophical term, within a few decades it took on connotations of impracticality thanks to Napoleon, who used it in a derisive manner. Such connotations are still present in some contexts, but the word today is largely used neutrally, most often to refer to a systematic body of concepts, and especially to the set of ideas and beliefs held by a particular group or political party.

Synonyms of ideology

• philosophy
• doctrine

Examples of ideology in a Sentence

the ideology of a totalitarian society

He says that the election is not about ideology.

Recent Examples on the Web

When education is filtered through ideology, students stop learning how to question, debate, and evaluate evidence. —Robert Casper, Boston Herald, 24 Feb. 2026

Trump is a politician with few core ideologies, but one consistent belief over the decades has been the power of taxing imports. —Jonathan Lemire, The Atlantic, 24 Feb. 2026

The speech invoked a Václav Havel essay about the hollowness of Communist ideology, embodied by the revolutionary slogans in shopkeepers’ windows that nobody actually believed. —Ben Smith, semafor.com, 23 Feb. 2026

The suspect is allegedly associated with nihilistic violent extremist ideology. —Brittny Mejia, Los Angeles Times, 23 Feb. 2026

Word History

Etymology

French idéologie, from idéo- ideo- + -logie -logy

First Known Use

1813, in the meaning defined at sense 2

Rhymes for ideology

• aetiology
• anthropology
• archaeology
• archeology
• audiology
• cardiology
• climatology
• cohomology
• cosmetology
• criminology
• demonology
• dermatology

Kids Definition

ideology

noun

ide·​ol·​o·​gy ˌīd-ē-ˈäl-ə-jē  ˌid- 

plural ideologies

: ideas characteristic of a person, group, or political party

ideologi cal

-ē-ə-ˈläj-i-kəl

adjective

ideologically

-i-k(ə-)lē

adverb

ideologist

-ē-ˈäl-ə-jəst 

noun

Medical Definition

ideology

noun

ide·​ol·​o·​gy ˌīd-ē-ˈäl-ə-jē  ˌid- 

variants also idealogy

-ˈäl-ə-jē  -ˈal- 

plural ideologies

1

: a systematic body of concepts especially about human life or culture

2

: a manner or the content of thinking characteristic of an individual, group, or culture

ideological adjective

also idealogical

ˌīd-ē-ə-ˈläj-i-kəl 

ideologically

-i-k(ə-)lē 

adverb