Fluid
Fluid adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: his arrival plans are fluid, so expect him anytime
Mercurial is a synonym for fluid in adaptable topic. In some cases you can use "Mercurial" instead the word "Fluid" as an adjective or a noun, when it comes to topics like unstable, changeable, variable. popular alternative
Nearby Word: fluidity
Mercurial
Mercurial adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: the boss's mood is so mercurial that we never know how he's going to react to anything
Fluid is a synonym for mercurial in volatile topic. You can use "Fluid" instead the word "Mercurial" as an adjective or a noun, if it concerns topics such as variable. popular alternative
Mutual synonyms
Related pairs
Cite this Source
Mercurial and Fluid. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fluid/mercurial
Fluid & Mercurial. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fluid/mercurial>.
Mercurial or Fluid. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fluid/mercurial.
Google Ngram Viewer shows how "fluid" and "mercurial" have occurred on timeline