Immutable
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Learn This WordMeaning
Unchanging over time or unable to be changed.
Memory trick
IM-MUTABLE: not mutable, not moveable in form, fixed.
Examples
In this architecture, event logs are immutable after write.
Some constraints are immutable; strategy must adapt around them.
The law was once seen as immutable, but reforms proved otherwise.
Synonyms
Antonyms
Etymology
From Latin immutabilis "unchangeable," from in- "not" + mutare "to change."
Usage Notes
Common in engineering and philosophy. In programming, immutable data cannot be modified in place.
Real-life contexts
Use in tech: "Treat IDs as immutable once assigned."
Use in planning: "Assume immutable constraints first, then optimize."
Use in argument: "Is that truly immutable or just hard to change?"
Common Mistakes
Don’t confuse immutable with inevitable. Immutable means cannot change; inevitable means certain to happen.
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Part of Speech
adjective
Difficulty
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