A liquid (as opposed to a solid or gas).
Any substance which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma.
Intravenous fluids.
In a state of flux; subject to change.
Of or relating to fluid.
Moving smoothly, or giving the impression of a liquid in motion.
Convertible into cash.
Genderfluid.
Foam formed by water and a fluorocarbon surfactant, used in firefighting because it floats on flammable liquids lighter than water.
Water in its standard form of H₂O, containing two protium hydrogen atoms, as opposed to heavy water.