Unalterable and Unstable

Opposite meaning words

Unalterable adjective - Not capable of changing or being changed.

Usage example: the rules of the game are unalterable, regardless of who is playing

Show all Definitions

Unstable is an antonym for unalterable.

Nearby Words: unaltered, unalterably

Unstable adjective - Not being in or able to maintain a state of balance.

Show all Definitions

Unalterable is an antonym for unstable.

Nearby Word: unstably

Cite this Source

Unstable and Unalterable. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/unalterable/unstable

Unalterable & Unstable. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/unalterable/unstable>.

Unstable or Unalterable. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/unalterable/unstable.

Google Ngram Viewer shows how "unalterable" and "unstable" have occurred on timeline