Erratic and Unchangeable

Opposite meaning words

Erratic adjective - Lacking a definite plan, purpose, or pattern.

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Unchangeable is an antonym for erratic.

Nearby Word: errant

Unchangeable adjective - Not changeable or subject to change.

Usage example: "a fixed and unchangeable part of the germ plasm"-Ashley Montagu

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Erratic is an antonym for unchangeable.

Cite this Source

Unchangeable and Erratic. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/erratic/unchangeable

Erratic & Unchangeable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/erratic/unchangeable>.

Unchangeable or Erratic. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/erratic/unchangeable.

Google Ngram Viewer shows how "erratic" and "unchangeable" have occurred on timeline