immutable

Cannot be altered

Immutable means unchangeable, incapable of being altered or modified.

An immutable law of nature cannot be suspended.

Someone's immutable character remains constant regardless of circumstances.

In computing, immutable data cannot be changed after creation—any modification produces a new copy rather than altering the original.

The court ruled that the contract terms were immutable.

unchanging

unchangeable

Impossible to modify

permanent · fixed · constant · static · irreversible · unmodifiable · inflexible · rigid · steadfast · unyielding

computing

constant

Fixed, unvarying quantity

stateless · thread-safe · atomic · deterministic · value · tuple · string · record · snapshot · referential

eternal

timeless

Unaffected by eras

ageless · enduring · lasting · perennial · undying · immortal · infinite · abiding · indestructible · unfading

Categories
Opposites
capacity for change

immutablemutable

Able to be changed

changeable · alterable · variable · modifiable · changeful

rigidity versus flexibility

immutableflexible

Able to bend freely

adaptable · malleable · pliable · pliant · plastic

Family

immutability, immutably

Familiarity
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Used worldwide · Timeless · Abstract · Rated G