immutable

Definitions

Unchanging over time or unable to be changed.

Not capable of or susceptible to change.

Examples

The laws of physics are considered immutable by many scientists.

Once the data is written to the blockchain, it becomes immutable and cannot be altered.

Her commitment to the cause remained immutable despite the mounting pressure.

Synonyms

unchangeable fixed permanent constant unalterable changeless steadfast

Antonyms

changeable mutable variable flexible fluctuating unstable alterable