fluid

Meaning

Noun

1. (countable, uncountable) 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.
2. (countable, uncountable) A liquid (as opposed to a solid or gas).
3. (colloquial, countable, specifically, uncountable) Intravenous fluids.

Adj

1. (not-comparable) Of or relating to fluid.
2. In a state of flux; subject to change.
3. Moving smoothly, or giving the impression of a liquid in motion.
4. Convertible into cash.
5. (rare) Genderfluid.

Synonyms

liquid

juice

water

🚰

flowing

fluent

liquor

sap

watery

runny

smooth

easy

mobile

solution

gravy

in easy circumstances

well-to-do

lotion

unsettled

unstable

running

🏃

viscous

prosperous

on easy street

affluent

changeable

nectar

pus

quicksilver

rareness

sauce

scarcity

secretion

serous

serum

sparsity

sticky

suave

succus

suppuration

sweat

😓

thick

uncertain

vacillant

variable

volatile

wavering

diffluent

fluidal

fluidic

liquidum

Translations

fluide

fluido

fluido

fluido

liquide

Flüssigkeit

liquido

ρευστό

vloeistof

fluid

flüssig

líquido

Fluid

líquido

Pronounced as (IPA)

/ˈfluːɪd/

Etymology

Inherited from Middle English: fluid

Cognate with Ancient Greek: φλύειν

Cognate with English: flow

In summary

From Middle English fluid, from Latin fluidus (“flowing; fluid”), from Latin fluō (“to flow”), from Proto-Indo-European *bʰleh₁- (“to swell; surge; overflow; run”). Akin to Ancient Greek φλύειν (phlúein, “to swell; overflow”). Not related to English flow, which is a native, inherited word from *plew-.