Invariable and Permanent

Invariable

Invariable adjective - Not capable of changing or being changed.

Permanent is a synonym for invariable in unchanging topic. In some cases you can use "Permanent" instead an adjective "Invariable".

Permanent

Permanent adjective - Lasting forever.

Invariable is a synonym for permanent in lasting topic. You can use "Invariable" instead an adjective "Permanent", if it concerns topics such as constant, unchanging.

Cite this Source
Permanent and Invariable. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/invariable/permanent
Invariable & Permanent. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/invariable/permanent>.
Permanent or Invariable. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/invariable/permanent.
Google Ngram Viewer shows how "invariable" and "permanent" have occurred on timeline