Unchangeable and Volatile

Unchangeable

Unchangeable adjective - Not changeable or subject to change.
Usage example: "a fixed and unchangeable part of the germ plasm"-Ashley Montagu

Volatile is an antonym for unchangeable.

Volatile

Volatile adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: a boss of volatile moods is frustrating to work for

Unchangeable is an antonym for volatile.

Cite this Source
Volatile and Unchangeable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/unchangeable/volatile
Unchangeable & Volatile. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/unchangeable/volatile>.
Volatile or Unchangeable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/unchangeable/volatile.
Google Ngram Viewer shows how "unchangeable" and "volatile" have occurred on timeline