Fluid
Fluid adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: his arrival plans are fluid, so expect him anytime
Mutable is a synonym for fluid in changeable topic. In some cases you can use "Mutable" instead an adjective "Fluid", when it comes to topics like change, adaptable, variable. popular alternative
Nearby Word: fluidity
Mutable
Mutable adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: a politician with very mutable positions on all the issues
Fluid is a synonym for mutable in change topic. You can use "Fluid" instead an adjective "Mutable", if it concerns topics such as changeable, variable. popular alternative
Mutual synonyms
Cite this Source
Mutable and Fluid. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fluid/mutable
Fluid & Mutable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fluid/mutable>.
Mutable or Fluid. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fluid/mutable.
Google Ngram Viewer shows how "fluid" and "mutable" have occurred on timeline