Immutable Meaning
/ˌɪˈmjutəbəl/Definition, CEFR level C2, pronunciation, examples, and quiz.
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Definition
adjUnable to be changed without exception.
adjNot able to be altered in the memory after its value is set initially.
Sentence Examples
This is an immutable truth.
An accident is an inevitable occurrence due to the action of immutable natural laws.
Mutable objects can be changed after initialization; immutable objects cannot.
CEFR Practice Quiz
The fundamental laws of physics are considered ____ and cannot be changed.
CEFR Practice Quiz (Alternate)
The fundamental laws of physics are ____ and do not change regardless of our personal observations.
Word Origin & History
From Middle English immutable, from Latin immūtābilis (“unchangeable”); im- + mutable.
Literary Quotations & Historical Citations
"Mutable as is our nature, it delights in the immutable: and we expect as much constancy as if all time, to say nothing of our own changeableness, had not shewn that ever "the fashion of this world passeth away.""
— 1834, L[etitia] E[lizabeth] L[andon], chapter XIV, in Francesca Carrara. […], volume II, London: Richard Bentley, […], (successor to Henry Colburn), →OCLC, page 171:
"In the trustless cryptocurrency world, you can still trust the cryptocurrency community and its mechanisms to ensure that the blockchain contains an accurate and immutable—unchangeable—record of cryptocurrency transactions."
— 2019, Peter Kent, Tyler Bain, Cryptocurrency Mining For Dummies, John Wiley & Sons, →ISBN, page 30:
Explore More C2 Vocabulary Words
CEFR Practice Quiz
The fundamental laws of physics are considered ____ and cannot be changed.
CEFR Practice Quiz (Alternate)
The fundamental laws of physics are ____ and do not change regardless of our personal observations.