immutability

C1
UK/ɪˌmjuːtəˈbɪlɪti/US/ɪˌmjuːtəˈbɪləti/

Formal, Academic, Technical

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Definition

Meaning

The quality or state of being unchangeable or unable to be altered.

A state of permanent stability, especially used in abstract contexts such as laws, principles, divine attributes, or data structures.

Linguistics

Semantic Notes

Implies a strong, often absolute, resistance to change. The term can carry connotations of permanence, eternity, or inflexibility, depending on context.

Dialectal Variation

British vs American Usage

Differences

No significant difference in meaning, spelling, or usage.

Connotations

None specific to either variety.

Frequency

Equally low-frequency in formal registers for both.

Vocabulary

Collocations

strong
divine immutabilityabsolute immutabilityimmutability of lawsimmutability of data
medium
suggest immutabilitybelieve in immutabilityprinciple of immutability
weak
apparent immutabilityseeming immutabilityhistorical immutability

Grammar

Valency Patterns

the immutability of [abstract noun] (e.g., laws, human nature)to argue for/against the immutability of

Vocabulary

Synonyms

Strong

invariabilityimmutableness

Neutral

unchangeabilityfixednesspermanence

Weak

stabilityconstancysteadfastness

Vocabulary

Antonyms

mutabilitychangeabilityvolatilityfluidityflexibility

Phrases

Idioms & Phrases

  • [no common idioms feature this specific noun]

Usage

Context Usage

Business

Rare. Occasionally used in high-level strategy to describe unchangeable market conditions or core company principles.

Academic

Common in philosophy, theology, law, and computer science to discuss unalterable truths, divine attributes, legal principles, or data states.

Everyday

Very rare. Would sound excessively formal.

Technical

Common in computer science, particularly in functional programming, to describe data objects that cannot be modified after creation.

Examples

By Part of Speech

verb

British English

  • The data structure was designed to immutable the state of the application.

American English

  • The system is engineered to immutable the core parameters once set.

adverb

British English

  • The rules were applied immutably, without exception.

American English

  • The algorithm processes data immutably, creating new copies.

adjective

British English

  • The laws of physics were considered immutable for centuries.

American English

  • Their commitment to the policy was described as immutable.

Examples

By CEFR Level

B1
  • Some people believe in the immutability of human nature.
  • The ancient stone circle has an air of immutability.
B2
  • The philosopher argued for the immutability of moral truths.
  • A key feature of this programming language is data immutability.
C1
  • The constitutional court's ruling underscored the immutability of certain fundamental rights.
  • Theological debates often centre on the immutability of the divine being versus its responsiveness.

Learning

Memory Aids

Mnemonic

Think: 'I'm mutable' means I can change. 'Im-mutable' with the prefix 'im-' (meaning 'not') means NOT changeable.

Conceptual Metaphor

IMMUTABILITY IS SOLIDITY/ROCK (e.g., 'the bedrock immutability of the constitution'), IMMUTABILITY IS ETERNITY (e.g., 'the immutable stars').

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

  • Avoid calquing as 'неизменяемость' in all contexts; for technical 'immutability' (comp. sci.), the established term is 'неизменяемость', but for philosophical 'immutability', 'неизменность' is more natural.

Common Mistakes

  • Misspelling as 'imutability' (single 'm').
  • Confusing with 'immobility' (inability to move).
  • Using in casual speech where 'permanence' or 'stability' would suffice.

Practice

Quiz

Fill in the gap
A core tenet of functional programming is data , which prevents side effects.
Multiple Choice

In which field is the term 'immutability' most commonly used as a technical term?

FAQ

Frequently Asked Questions

No, it is a low-frequency, formal word used primarily in academic, philosophical, legal, and technical (computer science) contexts.

'Immutability' means incapable of change at all. 'Stability' means resistant to change or unlikely to fall over; it implies a lack of *undesirable* change but allows for the possibility of change.

Yes. While it can signify reliability (e.g., immutable laws), it can also imply stubbornness, inflexibility, or an inability to adapt when applied to institutions or attitudes.

The adjective form is 'immutable'.

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