Fluid
Fluid adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: his arrival plans are fluid, so expect him anytime
Nearby Word: fluidity
Settled
Settled adjective - Having been established and usually not subject to change.
Usage example: settled rules that cannot be disregarded when it is convenient to do so
Both words in one sentence
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Born in the Saddle: Horse Lords adds a Nomadic form of government for steppe tribes to reflect their more fluid and less settled way of life.
Source: Video Game / Crusader Kings -
As the residue of the air settled, its fluid muscle was revealed, erratic in its crazed motions.
Source: Blob Monster
Cite this Source
Settled and Fluid. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fluid/settled
Fluid & Settled. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fluid/settled>.
Settled or Fluid. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fluid/settled.
Google Ngram Viewer shows how "fluid" and "settled" have occurred on timeline