Mutable and Sure

Opposite meaning words

Mutable adjective - Likely to change frequently, suddenly, or unexpectedly.

Usage example: a politician with very mutable positions on all the issues

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Sure is an antonym for mutable.

Nearby Words: mutation, mutate, mutability, mutating, mutably

Sure adjective - Having or showing a mind free from doubt.

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Mutable is an antonym for sure.

Nearby Word: surely

Cite this Source

Sure and Mutable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/mutable/sure

Mutable & Sure. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/mutable/sure>.

Sure or Mutable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/mutable/sure.

Google Ngram Viewer shows how "mutable" and "sure" have occurred on timeline