Impassive
Impassive adjective - Not feeling or showing emotion.
Unmodifiable and impassive are semantically related In some cases you can use "Unmodifiable" instead an adjective "Impassive".
Unmodifiable
Unmodifiable adjective - Incapable of being modified in form or character or strength (especially by making less extreme).
Impassive and unmodifiable are semantically related in fixed topic. Sometimes you can use "Impassive" instead an adjective "Unmodifiable".
Mutual synonyms
Cite this Source
Unmodifiable and Impassive. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/impassive/unmodifiable
Impassive & Unmodifiable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/impassive/unmodifiable>.
Unmodifiable or Impassive. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/impassive/unmodifiable.
Google Ngram Viewer shows how "impassive" and "unmodifiable" have occurred on timeline