Immutable and Unalterable

Immutable

Immutable adjective - Not capable of changing or being changed.
Usage example: one of the immutable laws of television is that low ratings inevitably lead to cancellation

Unalterable is a synonym for immutable in unchanging topic. In some cases you can use "Unalterable" instead an adjective "Immutable", when it comes to topics like unchangeable, flexible, changeless, imperishable. popular alternative

Nearby Word: immutability

Unalterable

Unalterable adjective - Not capable of changing or being changed.
Usage example: the rules of the game are unalterable, regardless of who is playing

Immutable is a synonym for unalterable in flexible topic. You can use "Immutable" instead an adjective "Unalterable", if it concerns topics such as unchanging, unchangeable, changeless, imperishable. popular alternative

Nearby Words: unaltered, unalterably
Cite this Source
Unalterable and Immutable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/immutable/unalterable
Immutable & Unalterable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/immutable/unalterable>.
Unalterable or Immutable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/immutable/unalterable.
Google Ngram Viewer shows how "immutable" and "unalterable" have occurred on timeline