adj
immutable
adj
1
Unable to be changed.
"The laws of physics are considered immutable."
2
In computing, describing data that cannot be altered once created.
"Strings in the language are immutable, so a new object is created every time you edit one."
How to Use Immutable
Learner’s notesIn plain EnglishFixed and unchangeable, whether talking about a law, a fact, or a piece of data in code.
When to use it
Common in both everyday and technical (programming) writing.
Common pairings
immutable law
immutable object
immutable truth
Word Forms
immutables plural
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Etymology
From Latin immutabilis, "unchangeable" (im- + mutable).