noun
fluid
FLOO-ihd
noun
1
A substance, such as a liquid or gas, that flows and takes the shape of its container.
"Make sure to drink plenty of fluids in hot weather."
adj
1
Changing easily or continuously; not fixed.
"Their travel plans stayed fluid right up until departure."
2
Moving smoothly and gracefully.
"The dancer's fluid movements made the routine look effortless."
How to Use Fluid
Learner’s notesIn plain EnglishSomething that flows (a liquid or gas), or a plan/situation that can still change easily.
Common pairings
bodily fluid
fluid situation
fluid movement
Word Forms
more fluid comparative, fluids plural, most fluid superlative
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Etymology
From Latin fluidus, "flowing," from fluere ("to flow"). Despite the resemblance, it is not directly related to the native English word "flow."