Permanent
Reversible
Reversible adjective - Capable of reversing or being reversed.
Usage example: reversible hypertension
Permanent is an antonym for reversible.
Both words in one sentence
-
Red Shirt Army: Generic background characters in the larger battle scenes come apart like tissue paper and are never mentioned (compare the reaction to Smokescreen's reversible death to the reaction to the permanent deaths of one shipful of soldiers after another near the end).
Source: Anime / Transformers Armada - Neil Gaiman's short story Changes features a pill (originally created as a cancer cure) that has the "side effect" of causing a painless, perfect, permanent yet easily reversible (just pop another one) sex change over night.
Source: Easy Sex Change
Cite this Source
Reversible and Permanent. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/permanent/reversible
Permanent & Reversible. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/permanent/reversible>.
Reversible or Permanent. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/permanent/reversible.
Google Ngram Viewer shows how "permanent" and "reversible" have occurred on timeline