subjective idealism: meaning, definition, pronunciation and examples

C2 (Very low frequency, specialized academic/philosophical term)
UK/səbˈdʒɛktɪv aɪˈdiːəlɪz(ə)m/US/səbˈdʒɛktɪv aɪˈdiːəˌlɪzəm/

Formal, Academic, Technical (Philosophy)

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Quick answer

What does “subjective idealism” mean?

The philosophical view that only minds and their perceptions or ideas exist, and that the external world is entirely dependent on or constructed by individual consciousness.

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Pronunciation

Definition

Meaning and Definition

The philosophical view that only minds and their perceptions or ideas exist, and that the external world is entirely dependent on or constructed by individual consciousness.

In broader cultural discourse, the term can be used metaphorically to describe an excessively self-centered worldview that treats personal perspective as the only valid reality, often ignoring objective facts or shared experience.

Dialectal Variation

British vs American Usage

Differences

No significant difference in meaning. American academic writing may reference Berkeley slightly more often in historical context, while British writing might connect it more to later idealist traditions (e.g., 19th century British idealism).

Connotations

Equally technical and academic in both variants. Carries a potential negative connotation of solipsism or intellectual detachment from practical reality when used polemically.

Frequency

Extremely rare outside philosophy departments. Possibly marginally more frequent in UK academic writing due to the historical prominence of British idealist philosophy.

Grammar

How to Use “subjective idealism” in a Sentence

Subjective idealism asserts/denies/posits that...According to subjective idealism, ...The argument for subjective idealism rests on...One objection to subjective idealism is...X's philosophy is a version of subjective idealism.

Vocabulary

Collocations

strong
Berkeley's subjective idealismradical subjective idealisma form of subjective idealismthe tenets of subjective idealismcritique of subjective idealism
medium
argue for subjective idealismembrace subjective idealismreject subjective idealismlead to subjective idealismsubjective idealism holds that
weak
philosophical subjective idealismpure subjective idealismkind of subjective idealismproblem with subjective idealism

Examples

Examples of “subjective idealism” in a Sentence

noun

British English

  • Berkeley's subjective idealism was a direct challenge to the materialist philosophy of his time.
  • The seminar focused on the historical development of subjective idealism in the 18th century.

American English

  • Subjective idealism is frequently introduced in introductory philosophy courses as a radical thought experiment.
  • His argument drifted perilously close to a form of subjective idealism.

Usage

Meaning in Context

Business

Virtually never used. If used metaphorically, it would be highly critical: 'The CEO's subjective idealism about market trends ignores our hard data.'

Academic

Primary context. Used in philosophy, history of ideas, and critical theory to denote a specific metaphysical position.

Everyday

Extremely rare. If used, it is likely a loose, often incorrect, synonym for being self-absorbed or unrealistic: 'He's so wrapped up in his subjective idealism he doesn't see the problem.'

Technical

Precise meaning in philosophy. May appear in related fields like psychology (discussions of perception) or literary theory, but with careful definition.

Vocabulary

Synonyms of “subjective idealism”

Neutral

immaterialismmentalismphenomenalism (in some interpretations)

Weak

idealism (broader term)anti-realism (in certain contexts)

Vocabulary

Antonyms of “subjective idealism”

Watch out

Common Mistakes When Using “subjective idealism”

  • Using it to mean 'personal preference' or 'bias'.
  • Confusing it with 'idealism' meaning optimism or pursuit of high principles.
  • Misspelling as 'subjective idealisM' (missing the second 'm').

FAQ

Frequently Asked Questions

No, but it is closely related and often accused of leading to it. Subjective idealism claims reality is mental/perceptual. Solipsism is the extreme view that only *my own* mind and its contents exist. Berkeley, a subjective idealist, avoided solipsism by invoking God as the perceiver who sustains reality when humans aren't observing it.

Plato's idealism (often called 'objective idealism' or 'realism about Forms') posits abstract, perfect, mind-independent Forms as the true reality. Subjective idealism denies any mind-independent reality whatsoever, grounding everything in individual perception or the mind of a perceiver (human or divine).

Imagine if everything you perceived—this room, your hands, distant stars—were simply a very detailed, coherent, and persistent set of sensations in your mind, with no underlying physical substance. This is the core intuition of subjective idealism. It asks: 'If all we ever directly know are our ideas, what justification do we have for believing in a material world behind them?'

As a standalone metaphysical system akin to Berkeley's, it is a minority position. However, its arguments continue to be seriously studied in epistemology (theory of knowledge) and philosophy of mind. Modern 'anti-realist' or 'phenomenalist' positions often engage with similar questions about the relationship between perception and reality, making historical subjective idealism a crucial reference point.

Subjective idealism is usually formal, academic, technical (philosophy) in register.

Subjective idealism: in British English it is pronounced /səbˈdʒɛktɪv aɪˈdiːəlɪz(ə)m/, and in American English it is pronounced /səbˈdʒɛktɪv aɪˈdiːəˌlɪzəm/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • Living in a world of subjective idealism
  • That's a rather subjective idealist position to take.

Learning

Memory Aids

Mnemonic

Imagine a SUBJECT (a person) who believes everything is just an IDEA in their mind. SUBJECTive IDEALism.

Conceptual Metaphor

THE WORLD IS A DREAM (held by an individual mind). MIND IS A CONTAINER (for all of reality).

Practice

Quiz

Fill in the gap
The philosophical doctrine that denies the existence of mind-independent objects, claiming reality is constituted by perceptions, is known as .
Multiple Choice

Which philosopher is most directly associated with the classical formulation of subjective idealism?