Alterable and Unalterable
Opposite meaning words
Alterable
Alterable adjective - Capable of being readily changed.
Usage example: if my vacation plans were alterable, I'd change them
Unalterable is an antonym for alterable.
Unalterable
Unalterable adjective - Not capable of changing or being changed.
Usage example: the rules of the game are unalterable, regardless of who is playing
Nearby Words: unaltered, unalterably
Cite this Source
Unalterable and Alterable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/alterable/unalterable
Alterable & Unalterable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/alterable/unalterable>.
Unalterable or Alterable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/alterable/unalterable.
Google Ngram Viewer shows how "alterable" and "unalterable" have occurred on timeline